The A's right fielder couldn't make the catch and immediately cradled his right arm before he exited the game with a trainer by his side. He was sent to a nearby hospital for X-rays, which came back negative.
"It was a huge sigh of relief," Reddick said. "I was scared. I was nervous that something was seriously wrong because I lost feeling in that area for quite awhile. I never lost feeling in the fingers, which I knew was a good sign. But for as hard as that wall is with all that metal wiring, I was really nervous about how serious it was going to be."
So were his manager and teammates.
"I was very concerned," manager Bob Melvin said. "It takes a lot to get him out of the game. But I feel much better about it now. I don't know what the timetable is going to be, but the fact that it's not broken, based on how it was feeling originally, is good news."
The A's have deemed Reddick day to day, but aren't certain whether to consider him a candidate for the disabled list. At the very least, they know he likely won't play in Tuesday's series opener in Anaheim.
In the meantime, Oakland has an abundance of outfield depth, with Chris Young and Seth Smith able to keep Reddick's spot warm while he's out.
"We'll just keep icing it and see where we are on Tuesday," Reddick said. "Obviously, I don't want to miss any time. The numbers don't show I'm doing very well, but I'm hitting the ball hard and having great at-bats, so I can't be too upset about that. I'll keep grinding and things will work out."
Reddick finished the day with a .125 average. But he's not the only one struggling -- Yoenis Cespedes and Josh Donaldson are both hitting .120 -- and his Gold Glove Award-winning defensive skills are valued just as much by the A's, who weren't at all surprised to see him make such a determined attempt at Marwin Gonzalez's foul fly ball despite leading by eight runs at the time.
"You never want to see anyone come out of the game like that," left-hander Brett Anderson said, "But as a pitcher, you applaud his effort."
"It doesn't matter the score, I'm always playing hard, and I'm not going to change that just because we're up," Reddick said. "It never goes through my mind to not run hard."