ST. LOUIS (AP) — Mets ace Jacob deGrom is returning to New York for an MRI on his right elbow after shaky outings in his last two starts.

Manager Mickey Callaway said the reigning NL Cy Young Award winner has been scratched from his start Saturday at St. Louis. Callaway said deGrom’s elbow was “barking” on Friday, a day after playing catch during Thursday’s off day.

DeGrom is 2-2 with a 3.68 ERA in four starts this season. He dominated with 13 scoreless innings in his first two outings, but lost his last two starts while allowing a total of nine runs on 13 hits and five walks in nine innings.

The 30-year-old deGrom won the Cy Young last season with a 1.70 ERA in 32 starts. He signed a 37.5 million, five-year contract in March, right before opening day.

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