"Sooner rather than later," Wedge said during an interview with MLB Network Radio.

But Hultzen hasn't pitched since mid-April for Triple-A Tacoma because of a rotator cuff strain and tendinitis in his left shoulder. Hultzen, who is one of the top pitching prospects in baseball, is 3-1 with a 2.78 ERA and .198 opponents' batting average in four starts for Tacoma. He has struck out 25 in 22 2/3 innings.

"I don't want to be here for this reason," Hultzen, who was scratched from his Thursday start with Triple-A Tacoma, said. "I'm doing my rehab here, just to get work done with the trainers. Then I'll go be a cheerleader for the Rainiers. That's the plan for now."

Hultzen will likely need two weeks off from throwing, followed by at least two weeks of rehab. He could be down for at least a month. 

"This is obviously something you don't want to have happen, but I'm going to just stay positive and get through it," Hultzen said. "It'd been bothering me a little bit, just the normal pitcher's tired arm or whatever. Nothing I worried about. But it got to a point where Dwight [Bernard], the pitching coach, asked me if my arm hurt because he could see something. So that's when we shut it down before the game."

Hultzen has performed well at Triple-A Tacoma this season, posting a 2.78 ERA, 1.02 WHIP and 25:6 K:BB ratio over 22 2/3 innings in his four starts.