"I've had some (high school) football hits that were harder than that," Newcomb told reporters on Sunday, according to a report by MLB.com. "I've had a few concussions. Right away, when it hit me in the head and I was down on the ground, I popped up, and I knew I was alright. I knew it wasn't too, too bad."
Braves manager Brian Snitker on Sunday said Newcomb was sore but all the test results on the pitcher were good.
"He made it through the night good and felt good coming in. They exercised him just to see. He's going to need a couple days anyway after the start. But as of right now, he's feeling really good. We're fortunate we dodged a bullet there," Snitker said, according to a report by the Atlanta Journal-Constitution.
The ball hit by Realmuto in the third inning at SunTrust Park on Saturday was clocked at 102 mph and caromed off Newcomb's head and sailed into the netting behind the Phillies' dugout on the third-base side. Realmuto covered his mouth with both hands as he ran to first base on what went as a ground-rule double.
Newcomb is expected to return to pitching out of the bullpen.
The Associated Press contributed to this report.