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Gio Rojas
3 weeks ago
Wednesday, May 26, 2010
Fangraphs
I'm excited to report that fangraphs has posted my blog post about Dusty Baker's handling of the pitch counts of Reds starting pitchers to their community research blog. It's great to be able to get such good feedback so early in putting this blog together. I hope to submit more of my work to the fangraphs community research blog in the future, so if you have ideas you'd like to see me pursue, please suggest them.
Tuesday, May 25, 2010
Reds Waste a Good Outing by Leake
Mike Leake pitched a gem tonight, but he left with nothing to show for it. After seven shutout innings, he gave up a leadoff "triple" to start the eighth. It was really a routine fly ball to center, but Drew Stubbs lost the ball in the lights or clouds or something. One more double, and Leake exits trailing 1-0. A Brandon Phillips home run got Leake off the hook, but it wouldn't be enough, as the Pirates went on to win 2-1.
(I got to watch a few innings of the game on my MLB At Bat 2010 app on my iPod Touch. It was the first game I've really watched, and I was very pleasantly surprised at how easy it was to watch on the small screen. If you are considering the app, it is well worth the $15.)
As far as I could tell from the parts I saw, the pivotal play in the game was the Stubbs misplay. Stubbs has a reputation as an excellent center fielder. When his bat was struggling and Dusty Baker dropped him in the lineup, Baker defended him by saying that Stubbs had to stay in the lineup because his glove was needed in center. The fact is, however, Stubbs has not played well in the field this season, and tonight's gaffe doesn't exactly instill confidence that he is the long-term answer in center. According to fangraphs, his UZR for the season stands at -4.0, meaning he's cost the Reds a 4 runs (or a little under half a win) this season when compared to an average CF. In contrast, his UZR was 6.3 in just 42 games last season. I wonder which one is the real Drew Stubbs. There have always been questions about his bat, especially because of his tendency to strikeout. With a brutal 31.3% - even worse than Adam Dunn, who the Reds drove out of town because of all the strikeouts - Stubbs has the 8th highest K% in all of baseball. If Stubbs continues to whiff at such prolific rates and continues to play such sloppy sloppy defense, we may be looking for a new center fielder soon.
(I got to watch a few innings of the game on my MLB At Bat 2010 app on my iPod Touch. It was the first game I've really watched, and I was very pleasantly surprised at how easy it was to watch on the small screen. If you are considering the app, it is well worth the $15.)
As far as I could tell from the parts I saw, the pivotal play in the game was the Stubbs misplay. Stubbs has a reputation as an excellent center fielder. When his bat was struggling and Dusty Baker dropped him in the lineup, Baker defended him by saying that Stubbs had to stay in the lineup because his glove was needed in center. The fact is, however, Stubbs has not played well in the field this season, and tonight's gaffe doesn't exactly instill confidence that he is the long-term answer in center. According to fangraphs, his UZR for the season stands at -4.0, meaning he's cost the Reds a 4 runs (or a little under half a win) this season when compared to an average CF. In contrast, his UZR was 6.3 in just 42 games last season. I wonder which one is the real Drew Stubbs. There have always been questions about his bat, especially because of his tendency to strikeout. With a brutal 31.3% - even worse than Adam Dunn, who the Reds drove out of town because of all the strikeouts - Stubbs has the 8th highest K% in all of baseball. If Stubbs continues to whiff at such prolific rates and continues to play such sloppy sloppy defense, we may be looking for a new center fielder soon.
Monday, May 24, 2010
Dusty at it Again
The Reds look like they'll win tonight and move into a tie with the Cardinals for first again. Of course, they were up 7-2 when Harang came off the mound to end the sixth. He had thrown 101 pitches and was due to lead off. Dusty has him hit anyway. Harang comes back out and gets knocked around a bit in the seventh before getting pulled. It makes me wonder how much better these guys' stats would be if they were taken out when their day was done.
Dusty Baker and Pitch Counts
(This post was also posted on the fangraphs community research blog.)
Over the first week of my new blog, I've made a number of posts about Dusty Baker's handling of Reds pitchers. I suggested that I thought Baker has done a better job of managing the workload of his starting pitchers this year. In that same post, I noted how Reds pitchers exceeded 110 pitches only five times at that point this season, and that after each such occurrence the starter was given an extra day of rest before his next start. The next day, he left Johnny Cueto in to throw 113 pitches in the fourth game of a twenty-day stretch with no off days. I then speculated that having Cueto throw so many pitches might cost the Reds before the stretch was over. Cueto had to leave his next start early with a blister. Then, of course, there is Homer Bailey. Yesterday, Bailey left his start early, and I pointed out that Baker has not been as careful in his handling of Bailey -particularly last year - as he has been with the other two youngsters in the rotation: Johnny Cueto and Mike Leake. Today, Bailey went on the DL with shoulder soreness. So, is Dusty managing the starters' pitch counts better or not?
To help understand, I put together this chart (with data pulled from fangraphs).
The chart shows the percentage of team games in which the starter pitcher threw at least the number of pitches on the x-axis. So, in 2009, Reds starters threw 80 or more pitches nearly 91% of the time. In 2010, the fewest pitcher a Reds starter had thrown in a game was 81 pitches. (I pulled this data the day before Homer Bailey's injury forced him out early.) This chart makes clear that the 2010 Reds are not having as many low pitch count outings as the 2009 team. Low pitch count outings are driven by the injury bug and by ineffectiveness. The 2010 Reds have been generally healthy, Bailey's injury notwithstanding. Plus, the 2010 Reds are in contention and have been pitching relatively well of late, so it stands to reason that they've had relatively few ineffective outings. It also doesn't hurt that it is still early in the season before arms wear down.
While the factors mentioned above explain the low pitch count disparity between the 2009 and 2010 Reds, the manager makes a move in those cases out of necessity. What is more interesting are the high pitch count games, where the manager determines the pitcher has done his day's work. Reds starters are being called on to throw between 103 and 113 pitches slightly less frequently than in 2009, but they are also throwing 118 pitches or more with greater regularity (albeit with a very small sample size). So, is Dusty abusing his rotation? It depends on where you draw the threshold for what constitutes overuse.
For comparison, let's see how other teams are handling their starting rotation. First, here are curves for each MLB team in 2009.
A few features jump out here. First, Astros starters (blue x) managed to get beyond 80 pitches only 77% of the time. That was less than any other team. Second, Nationals pitchers (pink triangles to the left) reached the magical 100 pitch mark only 24% of the time, while the Diamondbacks (royal blue to the right) reached it a league-high 59% of the time. Finally, and most interesting of all, is that Tigers starters (maroon diamonds at the bottom right) were called on to throw more than 110 pitches with significantly greater frequency than any other team. Maybe Rick Porcello isn't striking anyone out because his arm is about to fall off. :-)
So, is 2010 any different?
Boy, is it! Pirates starters (green diamonds) have made it to 90 pitches just 53% of the time. I had to look it up to make sure there wasn't an error in my script. It is, in fact, correct. Other than Zack Duke and Paul Maholm, no one has been able to get to remotely deep into games with any consistency at all. Also of note is that pitchers are generally having fewer low pitch count games in 2010 than in 2009. This can be seen because the top half of the curve is generally to the right of the top half of the 2010 curve. I assume this difference is because of the fatigue that shows up as a season wears on. This trend even hold true in the high pitch count games, although it isn't as clear from this chart. In 2009, just four teams had starters throw more than 115 pitches in 10% of their games. They were the Tigers (17%), Giants (12%), Royals (12%), and Reds (12%). In 2010, there are 13 teams whose starters have thrown 115 or more pitches 10% of the time. That group is led by the Rockies (19%), and includes the Giants (17%), Angels (16%), Astros (14%), Tigers (14%), Phillies (14%), Rangers (14%), Red Sox (14%), Brewers (12%), Dodgers (12%), Reds (12%), Cubs (11%), and Diamondbacks (11%).
By this measure, Dusty Baker is still working his starting rotation pretty hard but not any more than he did last year. Maintaining the status quo is still better than much of the rest of the league at this point in the season though, so maybe we should cut him some slack and see how the season plays out.
Over the first week of my new blog, I've made a number of posts about Dusty Baker's handling of Reds pitchers. I suggested that I thought Baker has done a better job of managing the workload of his starting pitchers this year. In that same post, I noted how Reds pitchers exceeded 110 pitches only five times at that point this season, and that after each such occurrence the starter was given an extra day of rest before his next start. The next day, he left Johnny Cueto in to throw 113 pitches in the fourth game of a twenty-day stretch with no off days. I then speculated that having Cueto throw so many pitches might cost the Reds before the stretch was over. Cueto had to leave his next start early with a blister. Then, of course, there is Homer Bailey. Yesterday, Bailey left his start early, and I pointed out that Baker has not been as careful in his handling of Bailey -particularly last year - as he has been with the other two youngsters in the rotation: Johnny Cueto and Mike Leake. Today, Bailey went on the DL with shoulder soreness. So, is Dusty managing the starters' pitch counts better or not?
To help understand, I put together this chart (with data pulled from fangraphs).
The chart shows the percentage of team games in which the starter pitcher threw at least the number of pitches on the x-axis. So, in 2009, Reds starters threw 80 or more pitches nearly 91% of the time. In 2010, the fewest pitcher a Reds starter had thrown in a game was 81 pitches. (I pulled this data the day before Homer Bailey's injury forced him out early.) This chart makes clear that the 2010 Reds are not having as many low pitch count outings as the 2009 team. Low pitch count outings are driven by the injury bug and by ineffectiveness. The 2010 Reds have been generally healthy, Bailey's injury notwithstanding. Plus, the 2010 Reds are in contention and have been pitching relatively well of late, so it stands to reason that they've had relatively few ineffective outings. It also doesn't hurt that it is still early in the season before arms wear down.
While the factors mentioned above explain the low pitch count disparity between the 2009 and 2010 Reds, the manager makes a move in those cases out of necessity. What is more interesting are the high pitch count games, where the manager determines the pitcher has done his day's work. Reds starters are being called on to throw between 103 and 113 pitches slightly less frequently than in 2009, but they are also throwing 118 pitches or more with greater regularity (albeit with a very small sample size). So, is Dusty abusing his rotation? It depends on where you draw the threshold for what constitutes overuse.
For comparison, let's see how other teams are handling their starting rotation. First, here are curves for each MLB team in 2009.
A few features jump out here. First, Astros starters (blue x) managed to get beyond 80 pitches only 77% of the time. That was less than any other team. Second, Nationals pitchers (pink triangles to the left) reached the magical 100 pitch mark only 24% of the time, while the Diamondbacks (royal blue to the right) reached it a league-high 59% of the time. Finally, and most interesting of all, is that Tigers starters (maroon diamonds at the bottom right) were called on to throw more than 110 pitches with significantly greater frequency than any other team. Maybe Rick Porcello isn't striking anyone out because his arm is about to fall off. :-)
So, is 2010 any different?
Boy, is it! Pirates starters (green diamonds) have made it to 90 pitches just 53% of the time. I had to look it up to make sure there wasn't an error in my script. It is, in fact, correct. Other than Zack Duke and Paul Maholm, no one has been able to get to remotely deep into games with any consistency at all. Also of note is that pitchers are generally having fewer low pitch count games in 2010 than in 2009. This can be seen because the top half of the curve is generally to the right of the top half of the 2010 curve. I assume this difference is because of the fatigue that shows up as a season wears on. This trend even hold true in the high pitch count games, although it isn't as clear from this chart. In 2009, just four teams had starters throw more than 115 pitches in 10% of their games. They were the Tigers (17%), Giants (12%), Royals (12%), and Reds (12%). In 2010, there are 13 teams whose starters have thrown 115 or more pitches 10% of the time. That group is led by the Rockies (19%), and includes the Giants (17%), Angels (16%), Astros (14%), Tigers (14%), Phillies (14%), Rangers (14%), Red Sox (14%), Brewers (12%), Dodgers (12%), Reds (12%), Cubs (11%), and Diamondbacks (11%).
By this measure, Dusty Baker is still working his starting rotation pretty hard but not any more than he did last year. Maintaining the status quo is still better than much of the rest of the league at this point in the season though, so maybe we should cut him some slack and see how the season plays out.
Sunday, May 23, 2010
Bailey Not Being Handled with Care
I posted last night and praised Dusty Baker for taking Johnny Cueto out of the game after 6 strong innings and just 93 pitches. Not having access to anything more than game stats, I wasn't aware that Cueto was removed because of a blister. I guess it may be too early to say that Dusty is handling him with care.
The criticism of Dusty in the past has been about his handling of young starting pitchers. In Mike Leake, Cueto, and Homer Bailey, the Reds have three such pitchers in their rotation right now. Baker has actually done a fairly good job limiting the workload of both Leake and Cueto, but Bailey has been something of a different story. Other than one 118 pitch outing earlier this season, neither Cueto nor Leake has been asked to throw more than 113 pitches in a game in their short careers. Bailey already has two games this year where he's exceeded 113, and that's in addition to the six he had last year. Why isn't Dusty showing the same restraint with Bailey as he has with Cueto and Leake? A quote from Mark Sheldon's blog gives some insight into Dusty's thinking about Bailey:
The criticism of Dusty in the past has been about his handling of young starting pitchers. In Mike Leake, Cueto, and Homer Bailey, the Reds have three such pitchers in their rotation right now. Baker has actually done a fairly good job limiting the workload of both Leake and Cueto, but Bailey has been something of a different story. Other than one 118 pitch outing earlier this season, neither Cueto nor Leake has been asked to throw more than 113 pitches in a game in their short careers. Bailey already has two games this year where he's exceeded 113, and that's in addition to the six he had last year. Why isn't Dusty showing the same restraint with Bailey as he has with Cueto and Leake? A quote from Mark Sheldon's blog gives some insight into Dusty's thinking about Bailey:
"That's why I left him in certain games, certain situations to help him get to this point of maturity to know the importance of this game, how to handle it and pitch accordingly," Baker said. "It's kind of felt like the making of an ace. That's what I told him. It's a big game for us and him. It's not do or die but it sure can take us a long ways and take his confidence over the top."Dusty apparently feels like an "ace" needs to be able to work deep into games - even if that means throwing a lot of pitches. Bailey may suffer for that mentality. In fact, Bailey was removed from today's game a little while ago. I don't know what the nature of the injury was, but it certainly didn't look like he was pulled for poor performance. Hopefully this is a minor thing, but I wouldn't be surprised if this turns out to be serious.
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