Here are some quick numbers on Ryan Dempster's sinker. Looking at his last two Cactus League starts (both in PITCHf/x parks, thankfully) and his last two season's first starts, you can see he's throwing his bread-and-butter pitch full bore already.
Ryan Dempster Sinker Speeds
Date min avg max
4/3/08 87.1 90.4 92.6
4/7/09 89.8 91.8 93.8
3/23/10 89.3 90.9 92.7
3/28/10 88.6 91.6 93.4
Demp's first outings in 2008 and 2009 were in Chicago and Houston, respectively.
On Sunday Dempster worked into the seventh inning, loaded the bases and escaped by striking out the side. How was his sinker velocity compared to other seventh innings? Compared to his 2008 and 2009 numbers, Dempster's sinker was no different.
Ryan Dempster Sinker Speed - Seventh Inning of Starts
Date min avg max
2008-9 88.2 91.6 94.2
3/28/10 90.7 91.5 93.1
He's ready. Let's go.
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