Jason Hammel said it felt like his hand "exploded" when he was hit with a batted ball Tuesday night against the Yankees.
On the second pitch of the game, New York's Brett Gardner lined a pitch off Hammel's right hand, leaving clear seam marks in its wake.
"It was scary for all of us," Cubs manager Rick Renteria said.
Hammel gutted it out and stayed in the game, shutting down the Yankees through 5.2 innings and out-dueling Masahiro Tanaka.
The 31-year-old veteran said nothing is broken in his hand and it is just a deep bone bruise.
"It's a little swollen, but other than that, it'll be alright," he said. "It's gonna be sore for a couple days. ... It feels OK right now."
Hammel said he dealt with the soreness during the game, and struggled to get a grip on his breaking ball. After he was hit, he took a couple warm-up pitches and the first one he threw sailed to the backstop. But he was able to settle down and give the Cubs enough to pull out his fifth victory.
"What does it say about him? He's a gamer," Renteria said. "He stayed in there. But wanting to stay in and being healthy enough to stay in are two different things. Yesterday, we were fortunate it was both."
Hammel came into the locker room Wednesday with a healing patch on the back of his hand and said he doesn't anticipate missing any time.
"In my gameplan, I'm gonna make that start," he said. "If I could continue to pitch after getting hit, I would assume I could go [next time out]."
Hammel is in the midst of a career year, with a 5-2 record, 2.91 ERA and 0.90 WHIP (which ranks fourth in Major League Baseball).