The 26-year-old was added to the active roster in late June but will now head back to Syracuse since Jorge Polanco (Achilles/ankle/wrist) was reinstated from the IL. Mauricio has struggled at the plate in 17 big-league games this year, going 9-for-50 (.180) with no walks and a 36 percent strikeout rate.

Called up earlier in the day when Marcus Semien (hip) landed on the IL, Mauricio produced the Mets' only extra-base hit off southpaw Matthew Boyd. The 25-year-old infielder got the start at shortstop while Francisco Lindor got the day off, but with Semien on the shelf and Bo Bichette shifted back to third base, Mauricio could end up seeing most of his playing time at the keystone, where he'll compete with Brett Baty for starts. Over 37 big-league plate appearances this season, Mauricio's batting .216 (8-for-37) with a 0:13 BB:K.