MASH Report (5/8/14) – Thumb Injuries
• On Monday, Tom brought up looking at the rest of season effects on Ryan Zimmerman’s thumb injury. Tom was looking for the effects for different types of thumb injuries. Well, I can’t get that detailed. The injury database I have only goes goes down to the thumb level, not location on thumb. Even looking just at thumbs, only 28 documented players went on the DL since 2002 for thumb issues. I like to have around 50 players for a good sample, but cutting 28 in half (or more) would just not yield a decent sample size. So here is the information.
Average Age: 29.7
Median age: 29
Average DL Days: 35.2
Median DL Days: 30
Decline rate for hitters with a thumb injury
Stat: Year-1 to Year, Year to Year+1, Year-1 to Year+1
AVG: -0.010, -0.002, -0.015
OBP: -0.012, -0.004, -0.021
SLG: -0.015, -0.028, -0.044
Decline rate for hitters from age 28 to 30 season
Stat: Year-1 to Year, Year to Year+1, Year-1 to Year+1
AVG: -0.002, -0.003, -0.005
OBP: 0.000, -0.001, -0.001
SLG: -0.004, -0.006, -0.010
This season, he should see a 10 point drop in his expected AVG which will felt in his OBP and SLG. Next year, the there should be no more than the expected decline in AVG or OBP, but his SLG should drop more than expected by 20 points.