Pushing the limits

NATIONALS GM Mike Rizzo says he's going to shut down Stephen Strasburg completely once the 24-year-old ace reaches an innings limit, probably about 160 IP (Rizzo won't say exactly). The righthander is on pace to hit that cap around the third week in September, which means that to prevent their survivor of Tommy John surgery from suffering further injury, the Nats are risking their chances of winning a championship or even making the playoffs. That might have been a noble course of action on Rizzo's part, if not for one small issue: There's no evidence the arbitrary limitation will keep Strasburg healthy.

Injury rates in baseball have been climbing for more than 20 years. In fact, from 2007 to 2009, clubs sent more players to the DL than in any three-year stretch for which data is available. Pitchers account for about half of disabled-list reports and last season contributed to the nearly $500 million in teams' DL costs. This season, numerous star pitchers have been sidelined, from Michael Pineda to Roy Halladay to Colby Lewis.