BRADENTON, Fla. -- The Blue Jays added another arm to their big league camp on Monday, claiming left-hander Bill Murphy off waivers from the Arizona Diamondbacks.

Toronto placed right-hander Casey Janssen on the 60-day disabled list in order to clear room on the 40-man roster for Murphy. On Thursday, it was announced that Janssen, a candidate for a rotation or bullpen spot, would undergo season-ending surgery this week to repair a torn labrum in his throwing shoulder.

The 26-year-old Murphy, originally a third-round selection by the Oakland A's in the 2002 First-Year Player Draft, posted a 5.68 ERA in 10 games out of Arizona's bullpen last season. This spring, the southpaw is 1-0 with a 4.26 ERA, seven strikeouts and three walks in six appearances for the Diamondbacks.

Murphy spent the majority of the 2007 season with Triple-A Tucson, where he went 3-3 with a 3.68 ERA in 54 games, including nine starts, striking out 102 and walking 43 over 100 1/3 innings. Arizona acquired Murphy from the Dodgers on July 31, 2004, in the trade that sent Steve Finley and Brent Mayne to Los Angeles.

Murphy was also a part of two earlier trades that moved him from Oakland's farm system to Florida and then L.A. In his Minor League career, Murphy is 29-29 with a 4.44 ERA, 591 strikeouts and 337 walks over 646 1/3 innings in 183 games, including 103 starts.