Andy Ibáñez’s stint with the Mets has been anything but smooth sailing. Claimed off waivers from the Athletics just over a week ago, the 33-year-old infielder was brought in to bolster New York’s lineup against left-handed pitching. But so far, the results have been underwhelming.

After going hitless in his first two appearances, Ibáñez’s struggles extended to the field on Sunday. Making just his third start of the season at third base, he committed two costly throwing errors in a 5-1 loss to the Diamondbacks. “I just threw a little bit wide and it got away from me,” Ibáñez explained through a translator after the game. “It’s one of those things where you don’t want it to happen, but it’s baseball.”

The first error extended the fourth inning by just one batter, but the second proved far more damaging. Ibáñez allowed Ildemaro Vargas to reach base to lead off the sixth, and the Diamondbacks capitalized moments later. Back-to-back two-out run-scoring hits put the game out of reach for New York.

The Mets’ offense didn’t help matters, managing just four walks and four hits on the day. But defensive miscues like these are becoming a troubling trend. “Those are routine plays,” manager Carlos Mendoza said bluntly. “You expect those plays to be made, it’s as simple as that.”

For a team already battling an early-season skid, these errors are a tough pill to swallow. The Mets will need to tighten up their fundamentals—and quickly—if they hope to turn things around and get back on track.