The New York Mets placed right-hander Jacob deGrom on Major League Baseball's family medical emergency list Saturday due to an issue regarding his newborn baby.
Mets manager Terry Collins said there were "complications" with deGrom's son.
"We're all praying and pulling for him," Collins said.
The 27-year-old deGrom left the team to be with his wife Stacey in Florida during the birth of Jaxon Anthony deGrom on Monday night. He has remained with the family since.
"There's been some complications, and Jake needs to stay in Florida for a few days," Collins told reporters. "I've spoken to him every day.