Nimmo (knee) is scheduled to play Sunday for High-A St. Lucie, ESPN's Adam Rubin reports. It will amount to a short-term rehab assignment for Nimmo, who opened the season with Double-A Binghamton before the knee injury set in. The 22-year-old was slashing .297/.368/.420 over 155 plate appearances with Binghamton and is viewed as one of the Mets' top outfield prospects.