From USA Today:
From 2003 to 2006, an average of 136 players landed on the DL from spring training through April 30 each year. Last season, that number jumped to 168, a 24% increase. As of April 30, there were 181 players who spent time on the disabled list, another 8% jump.
Over the full season, a record 404 players hit the DL in 2007, 6% more than the previous high, 382 in 2004. This year's current pace would put 417 players on the shelf, another record.
Wonder how much this has to do with players not having that extra pharmaceutical help to prevent or lessen injuries? Also, don't think you'll see as many over 40 players thriving once baseball cleans up.