Brach confirmed that he and his pregnant wife both had COVID-19 and experienced mild symptoms, including loss of taste.
Jenae Brach gave birth to healthy twin boys, Carson and Brody, on July 17. Brad Brach helped the family settle into their Tennessee home before reporting to the Mets on Saturday.
"Couldn't have worked out better, honestly," Brach said.
The 34-year-old right-hander had a 3.68 ERA in 16 games with New York last year after being released by the Chicago Cubs at midseason. The Mets had not disclosed Brach's positive test prior to Saturday. It's unclear when Brach will be added to the active roster.
Another New York reliever, Jared Hughes, recently returned to the club after missing the start of summer camp for undisclosed reasons.