Mets INF Wilmer Flores was activated from the 10-day disabled list prior to Wednesday night's game in Atlanta.
LHP Sean Gilmartin was sent to Triple-A Las Vegas to make room on the 25-man roster for Flores.
Flores, who has been on the disabled list since April 21 due to a knee infection, went 2-for-4 for Triple-A Las Vegas on Tuesday night as he concluded his rehab assignment.
He told reporters he had been dealing with a staph infection, which doctors said might have required surgery had it not improved.
The 25-year-old Flores was hitting .