To take his spot, right-hander Luis Perdomo was recalled from the alternate training site on Friday.
Pomeranz, signed to a $34 million, four-year free agent deal in November, hadn’t allowed a run in nine innings over 10 appearances this year while striking out 12 and walking three.
Pomeranz’s injury is the latest for a bullpen that had been projected as the team’s major strength. The Padres placed closer Kirby Yates on the IL last week with an inflamed right elbow. Yates had an MLB-high 41 saves last year.
Padres place Pomeranz on IL with strained left shoulder originally appeared on NBCSports.com