Manager Mike Redmond, pitching coach Chuck Hernandez, bullpen coach Reid Cornelius and Eovaldi closely studied what might have gone wrong on Friday.
What they saw is perhaps Eovaldi was doing something subtle that the Giants detected.
"I think if you look at the video, maybe there could be something," Redmond said. "They hit him hard. That's the bottom line. Hopefully he will learn from that. I think it's always good to stay on top of guys' mechanics, especially our young pitchers, so they are relentless in their consistencies with their deliveries and their glove placement, and how they take signs and all that stuff. It's definitely something guys need to be aware of."