Brock Holt is still dealing with some symptoms from his concussion.
Holt began a minor league rehab assignment last week and concussion specialist Micky Collins thinks that he could be able to push through his current symptoms. The Red Sox expect Holt to be activated on Friday if all goes well.
Zack Wheeler (elbow) felt fine after playing catch Monday.
It was his first time throwing since he was shut down with discomfort in the elbow last week. Wheeler received a cortisone injection to address nerve irritation and will now try to ramp things up again. The Mets were originally aiming for a return around the All-Star break, but obviously his timetable has been pushed back a bit now.
Cuban infielder Yulieski Gourriel had a 90-minute workout with the Mets on Monday in Port St. Lucie, Florida.
Marc Carig of Newsday hears that the Mets had a "pretty big contingent" on hand, including general manager Sandy Alderson, special assistant J.P. Ricciardi, and some of the team's top scouts. The Mets added Jose Reyes on a minor league deal over the weekend and intend to give him playing time at third base, but the move isn't expected to impact their pursuit of Gourriel. Of course, Gourriel is going to cost them and they will face plenty of competition to land him. The 32-year-old also recently had a workout with the Dodgers.
DJ LeMahieu (knee) is absent from Monday's lineup versus the Blue Jays.
LeMahieu exited Sunday's game with a left knee contusion, but fortunately an MRI on Monday came back clean. He's still dealing with some soreness, but hopes to play Tuesday. Daniel Descalso will start in his place at second base and bat sixth Monday.
Trevor Story (finger) is not in Monday's lineup against the Blue Jays.
Story suffered a bruised right middle finger when he was hit by a pitch on Sunday. Consider him day-to-day. Cristhian Adames will start in his place at shortstop and bat second against right-hander Marco Estrada.
Kristie Ackert of the New York Daily News hears from three Mets sources that Steven Matz has a bone spur in his throwing elbow.
Matz has been dealing with discomfort in the elbow in his recent starts and is no longer a sure thing to make take his next scheduled turn Wednesday against the Nationals. Still, rest isn't expected to make much of a difference here. He might have to pitch through the discomfort for the rest of the season. Logan Verrett and Sean Gilmartin are the candidates to start Wednesday if the Mets want to go in a different direction.
Steven Souza (hip) is optimistic he'll be able to begin a minor league rehab assignment later this week.
Souza reported feeling good after hitting in the cage in each of the past two days. He was also scheduled to do some running Monday for the first time since his hip injury earlier this month. Barring a setback, he should rejoin the Rays before the All-Star break.
Jose Reyes will join Double-A Binghamton on Tuesday.
Reyes went 0-for-3 with a walk and played six innings at third base Sunday in his first game with Low-A Brooklyn. He'll play another game at third base with the Cyclones on Monday before moving up to face advanced competition. Look for him to join the Mets in the next week or so.