The Chicago Cubs have placed 28-year old righty reliever Trevor Cahill on the 15-day disabled list due to right patellar tendinitis. Cahill has pitched in 33 games (0 starts) for the Cubs so far this year and he is 1-3 with a 3.07 ERA and a 1.39 WHIP. Cahill has given up 33 hits and 24 walks while whiffing 46 batters in his first 41 innings pitched so far this year. The Cubs have activated 32-year old lefty reliever Clayton Richard from the D.L. Richard has pitched in 22 games (0 starts) for the Cubs so far this year and he is 0-1 with 1 save, a 7.30 ERA and a 2.19 WHIP. Richard gave up 21 hits and 6 walks while whiffing 6 batters in his first 12 1/3 innings for the Cubs this year, so he was getting hit hard this year. The Cubs hope that Cahill only has to miss a couple of weeks.