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October 13, 2009

PITCHf/x data from Arizona Fall League

Per MLBAM's Cory Schwartz, the Arizona Fall League has PITCHf/x camera systems operational at the Surprise and Peoria parks. PITCHf/x data will be available for all your favorite AFL participants, including Phillippe Aumont, Ian Kennedy, and, perhaps, super-uber-star prospect Stephen Strasburg and everyone's favorite Phillies minor league blogger Michael Schwimer, if the stars align so that either pitches at Surprise or Peoria.

Raw XML-format PITCHf/x data can be found here.

Posted by: Mike Fast

August 03, 2009

Midseason TotalZone Minors

In February, Sean ("Chone") Smith applied his TotalZone defensive metric to the last few years of minor league data. The resulting numbers confirmed some opinions, questioned some conventional wisdom, and helped us better understand the relationship between fielding at various levels of professional baseball.

Sean or I will probably go further in depth when the 2009 season is in the books, but while we wait, we've run TZ for the full-season minors through games of July 31. Read on for some of the highlights.
Click for more...

Posted by: Jeff Sackmann

July 27, 2008

Minors to Majors

MGL has analyzed the correlation between minor league and major league performances in consecutive years and draws comparisons to the same results for major leaguers only. The minor league stats are converted to major league equivalents for the analysis.

The bottom line is that minor league stats aren't as strongly correlated with the next year as major league stats, but the correlation is still pretty strong. For major leaguers, a typical year-to-year correlation for basic battings ratios (OBP, SLG) is around .5 or .6. For minor leaguers promoted to the majors, it's around .3 or .4. A question in my mind is whether selection bias is inflating the minors-to-majors correlations.
Posted by: Dave Studeman

June 25, 2008

What’s a starter?

The Brewers are going to experiment with their starting pitchers at Single-A Brevard County. In order to get projected starters accustomed to pitching to the end of games, the relievers are going to start each game, with the starter relieving the reliever in the third or fourth inning. That way, once the projected starters have reached the majors and strengthened their arms, they may have a stronger mindset to pitch complete games.

I don't know if this is a good idea or not, but I give a gold star to the Brewers for trying something new. (Hat tip: Shysterball)
Posted by: Dave Studeman

May 07, 2008

Are the Salt Lake Bees worth all the buzz?

Marc Hulet takes a close look at the Salt Lake Bees, who are off to a 25-6 start in Triple-A.
Posted by: Dave Studeman


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