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8/6/2013 9:02 P.M. ET

Bay a free agent after release by Mariners

Gutierrez's Minor League rehab assignment ends but he remains on disabled list

SEATTLE -- Outfielder Jason Bay was released by the Mariners on Tuesday, making the veteran outfielder a free agent after he was designated for assignment last week.

The Mariners also brought back outfielder Franklin Gutierrez from a Minor League rehab assignment with Triple-A Tacoma, though he remains on the 15-day disabled list and was not added to the active roster.

Since the return of Michael Morse from the disabled list last week, Seattle has five healthy outfielders in Morse, Michael Saunders, Raul Ibanez, Dustin Ackley and Endy Chavez.

Bay, 34, hit .204 with 11 home runs and 20 RBIs in 68 games for the Mariners after signing a one-year, $1 million deal during the offseason.

Gutierrez has played just 18 games for the Mariners this season, batting .267 with five home runs and 11 RBIs in 60 at-bats. He's had two stints on the disabled list due to a strained right hamstring and hit .219 with three home runs and 22 RBIs in 37 games for Tacoma while on rehab duty.

Position players can spend up to 20 days on each Minor League rehab stint, so Gutierrez has returned to the Mariners. He could be sent out on another rehab stint in five days if needed.

"He's still not really 100 percent," said acting manager Robby Thompson. "He still has a couple good days and a couple bad days. We pulled him off and I think it's a five-day period where he'll continue to get treatment. He'll hit in the cage and throw and continue doing that, and he'll get back and start [another] rehab assignment then.

"Just talking to him, when he does come back we need him to be at a point where we can use him against right-handers and left-handers, maybe in back-to-back days," Thompson said. "If he's not playing, he needs to be ready on the bench to pinch-hit or pinch-run and go out to the outfield. As of right now, he's not really to that point where he feels comfortable or confident to come back right now."

Pryor confident his arm will be fine by '14 season

SEATTLE -- Mariners reliever Stephen Pryor is still receiving feedback from doctors diagnosing an injury to his right biceps that wiped out the rest of his season, but the hard-throwing right-hander said he's confident things will be fine by next spring.

Pryor initially tore the latissimus dorsi muscle behind his right shoulder in mid-April after seven scoreless appearances. After a lengthy stint on the 60-day disabled list, he began a rehab in Triple-A Tacoma, but that halted when an MRI test on Saturday revealed a new problem in his biceps muscle.

Pryor said he believes the two injuries are related, but is waiting to hear more from doctors this week.

"They're going over it and getting some opinions on the best way to go about it," he said. "I went through the rehab process the first time and this happened, so we want to see if we need to change anything. I'm just trying to get healthy."

Pryor, 24, was expected to be a major contributor in the Mariners' bullpen this year after a rookie season in which he went 3-1 with a 3.91 ERA in 26 appearances. Now he's just trying to do whatever is needed to get back on the field again next season.

"I'm trying to stay pretty positive through everything," he said. "You can only control what you can control. So I'm just looking at it as trying to get a head start on getting better for next year and hopefully spend next year picking up where I left off this year. That's the goal anyway.

"Hopefully I'm getting it all out of the way early and the rest of my career I can just have fun."

Worth noting

• Friday will be fireworks night at Safeco Field, with the second postgame fireworks show of the season following the 7:10 p.m. PT game against the Brewers.

• Ken Griffey Jr.'s Mariners Hall of Fame induction will take place prior to Saturday's 6:10 p.m. game against the Brewers and fans will receive a Griffey Hall of Fame bobblehead. Only scattered single tickets remain for that contest.

There will also be a Hall of Fame luncheon honoring Griffey on Friday at Safeco Field, but that event is already sold out.

Greg Johns is a reporter for MLB.com. Follow him on Twitter @GregJohnsMLB as well as his Mariners Musings blog. This story was not subject to the approval of Major League Baseball or its clubs.