A CITIZEN'S BLOG

I looked up Jimmy Rollins OBP & GPA stats for this season and 2003, month-to-month. (I would have done more investigation if given a little more time.) I was curious about how much better Rollins got as the season wore on: Thome, as has been documented, has awful Aprils, mediocre Mays and spectacular Junes (this year being a notable exception). Here are Rollins stats:

2004: (OBP / GPA / ISO)
April: .263 / .185 / .085
May: .325 / .237 / .084
June: .375 / .292 / .117

They’ve shown a definite rise over the season and his numbers for June are fairly impressive: .375 OBP is about what you’d expect from your leadoff guy.

2003: (OBP / GPA / ISO)
April: .365 / .271 / .133
May: .305 / .233 / .107
June: .272 / .213 / .119
July: .357 / .261 / .115
August: .295 / .218 / .107
September: .345 / .264 / .178

Rollins numbers from 2003 are mildly encouraging: after June he seemed to get better overall, aside from August. Since Rollins has successfully lowered his strikeout rate this is brand-new territory for him. I’m not sure if we can expect him to turn into an OBP machine or if we should brace for the inevitable decline…

What the stats mean:
GPA (Gross Productive Average): (1.8 * .OBP + .SLG) / 4 = .GPA
ISO (Isolated Power): .SLG - .BA = .ISO