The Seattle Mariners, who have been surging up the AL wild card standings the last few weeks, will be without their best starting pitcher for at least three weeks. Friday afternoon the club announced left-hander James Paxton has been placed on the 10-day DL with a strained pectoral. He left Thursday's start with the injury. Paxton is, unfortunately, no stranger to the disabled list. He missed time with a forearm strain earlier this season, and over the years he's dealt with various finger, elbow, and lat injuries. Only twice since being drafted in 2010 has Paxton thrown more than 130 innings in a season.