• Collins offered some insight into Travis d'Arnaud's concussion, which forced the catcher to the seven-day disabled list earlier this week.
"The noise was so much he had to go inside," Collins said. "I told him to rest up this weekend, to take it easy. That is one of the things you have to do with this concussion thing is actually just lay down and rest. Hopefully when we get back on Tuesday, he'll feel better."
In d'Arnaud's absence, Collins said, Anthony Recker and Juan Centeno will split time at catcher.
• Collins said that when Dillon Gee comes off the disabled list on May 26, the Mets will choose to keep either Rafael Montero or Jacob deGrom in the rotation -- but not both. Despite the strong debuts of both Montero and deGrom this week, Collins intimated that the jobs of all his other starters are safe.
• Matt Harvey deviated from his typical rehab schedule this weekend, joining the Mets on their three-game trip to Washington. Harvey usually flies down to Florida when the Mets are on the road, but stayed with the team because the road trip was so brief and he typically rests on Sundays anyway.