McNeil walked off uneasily after scoring on a wild pitch in the fourth inning and went straight to the clubhouse. Luis Guillorme replaced him at second base the next inning and went 2-for-2 with a run scored in the Mets' 6-0 victory.
"We'll see," manager Buck Showalter said. "We think at this point it'll be a day-to-day thing."
McNeil reached in the fourth with a double that raised his batting average to a team-leading .327.
The left-handed hitter poked his hit against the shift after entering the game hitting .380 when teams stack three infielders on the right side.
J.D. Davis, meanwhile, was sent for X-rays on his left pinkie finger after being hit by a pitch in the eighth inning, and those initially came back negative, Showalter said.
Davis threw his bat in pain but remained in the game after becoming the league-leading 50th Mets player plunked this season. Davis had surgery in the offseason to repair a torn ligament in his left hand that bothered him throughout 2021.
Also, right-hander Max Scherzer, who has been sidelined since late last month with an oblique injury, will make a rehab start with Double-A Binghamton on Tuesday and could rejoin New York to start Sunday.
The Associated Press contributed to this report.