Reinheimer was claimed on waivers from the Arizona Diamondbacks on July 31. At the time, the 25-year-old had been with their Triple-A affiliate in Reno, hitting .237/.312/.353 in 50 games with three home runs, nine doubles, and two triples. He also had 20 walks to 45 strikeouts, and six stolen bases on 10 attempts.
Since moving over to Las Vegas with the Mets, he has hit .231/.333/.423 in nine games, with one home run and two doubles. He has seven strikeouts and four walks, and is also four for four on stolen base attempts. While he has only played shortstop for Vegas, he played both second and third while at Reno.
His lone major league appearances came on August 1 and 2 of 2017. He struck out in three of his five at-bats and failed to record a hit.
He will be replacing Luis Guillorme, who last appeared in a game on August 8, when he pitch hit for Jacob deGrom in the sixth inning. He flew out to left. His last start was July 29. So far this season, he is hitting .209/284/.239 over 74 plate appearances. He has played both second and third with the Mets, logging an even 0 DRS at second and -3 at third.
This is the second roster move that the Mets announced, with the other being the previously reported swap of Jacob Rhame for Tim Peterson.