The rookie third baseman still felt a little sore after getting hit on his right wrist in the ninth inning of Thursday night's 2-1 loss to the Mariners.
"It's just sore," Longoria said. "Hopefully [on Saturday] I'll be good to go. It's just one of those things where it's really not worth it, just because you're trying to get out there and maybe hurt it more or whatever. I really don't feel like I'd be able to go out there and help the team, so there's no reason to fight through it.
"It's just pain at the site of where I got hit. It's on my wrist. It's hard enough to hit with a good wrist."
Longoria remained in the game Thursday night, and X-rays taken after the game proved negative.
"I was obviously a little bit nervous, because there are all those little bones in there," Longoria said. "Anything could break. [There could be] a small fracture, because they're packed in there so tight. ... I was just happy I got the X-rays and nothing was broken."
Longoria arrived at Safeco Field prior to Friday night's game unclear if he would be able to play. Rays manager Joe Maddon even waited to post the lineup until he found out if Longoria would be available. After Longoria took a few swings, he got the answer to his question.
Despite Longoria being out of Friday night's lineup, Maddon did not think more X-rays were necessary.
"I don't think so," Maddon said. "[Head athletic trainer] Ronnie [Porterfield] was pretty confident that it's just the soreness after the hit [on Thursday]. It's one specific area. It's not swollen, it's not discolored. He was able to sleep last night. All the things that if he wasn't able to do, the symptoms would indicate something else, so we think it's OK."
The last thing the Rays need is to be without Longoria's services for an extended period of time. In 104 games, Longoria, 22, is hitting .278 while leading the Rays in home runs with 22 and RBIs with 71; and he has fielded his position well all season.
"I feel hopeful [about playing Saturday] -- if I can get some treatment done and get it right," Longoria said. "I got the X-rays done, and it was negative. That's a good sign. It's just the day after, and it's a little bit sore. We have to get past that."
Bill Chastain is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.