Quote:
Originally Posted by Statz2k10
I was very upset. I'm a huge Dodgers fan as well. Outside of Broxton, Kuo and Weaver the Dodgers bullpen is weak. Sherril needs to go. Troncoso isn't doing so hot either and I think last season Belisario was a 1 year wonder.
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Troncoso is a bit strange.
his 2008 was way out of line with his minor league numbers.
2007 AA: K/9=6.75, FIP=3.55
2008 AAA: K/9=5.28, FIP=4.31
2008 MLB: K/9=9, FIP=3.00
Not a lot of guys strike out more guys in the majors than the minors
His 2009 was more what one would expect base on his minor league numbers. Torre also used the hell out of him
2009: K/9=5.99, BB/9=3.70, HR/9=0.33, FIP=3.58, GB%=50%
2010: K/9=6.00, BB/9=3.00, HR/9=1.64, FIP=5.44, GB%=55%
He's striking out the same as he was last year, walking less, getting more ground balls, but giving up a ton more home runs. HR/9 is usually around 1.00, maybe a little less for GB pitchers like Troncoso. So, he was lucky (or really good) with HR in 2009, and the opposite in 2010.
2009: xFIP=4.22
2010: xFIP=4.56
xFIP normalizes HR rates based on fly ball rates. He's about the same pitcher this year as last.
He's lost some velocity (Thank's Joe?), as you can see in this graph
http://www.fangraphs.com/fgraphs/4685_P_1_20100624.png (broken link)
so that could be part of it.
As is often the case, he wasn't as good as he looked in 2009 and not as bad as he looks in 2010.
Belasario, same deal
2007 (AA): K/9=7.66, BB/9=5.11
2008 (AA): K/9=5.68, BB/9=3.95
2009: K/9=8.15, BB/9=3.69, HR/9=.51, xFIP=3.80
2010: K/9=6.61, BB/9=3.73, HR/9=.57, xFIP=3.82
So his K rate in 2009 was better than it 'should' have been given his minor league numbers. 2010 is closer to what you'd expect.
Also,
2009: ERA=2.04, Runners Stranded=81.1%
2010: ERA=4.01, Runners Stranded=68.1%
Runners Stranded for all pitchers tends to be about 72%.
So, in 2009 he got lucky keeping runners on base and not scoring, hence the low ERA. In 2010 he's not so lucky and more runners are scoring that would be predicted.
He's also throwing slower than last year, though his velocity has been gradually increasing. He had his visa issues in spring training so that might have something to do with it.
http://www.fangraphs.com/fgraphs/2203_P_1_20100622.png (broken link)