Athletics' Sergio Romo one

MLB pitchers aren't taking kindly to the league's new foreign substance rules.

Athletics pitcher Sergio Romo seemed particularly annoyed that the umpires performed a substance check on him Tuesday night.

After working a one-run seventh inning for Oakland, the umpire beckoned for Romo to come over for the check. Romo responded to the moment by tossing his hat and glove to the ground and whipping hi st louis cardinals mlb jersey bader s belt off.

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Then came Romo's final act. He pulled his pants halfway down t st louis cardinals mlb jersey 45 o prove that he wasn't harboring any illegal su st. louis cardinals mlb jersey pro bstances.

Romo certainly made his point, but Dan IassognShohei Ohtani a, the umpire checking him, didn't seem too bothered by his high jinks. In fact, the umpire flashed a smile at Romo, who the broadcast described as "h customized st. louis cardinals baseball jersey eated."

Romo wasn't alone in being bothered by the substance checkDKNY Sport on Tuesday. Max Scherzer was checked for foreign substances three times in the first four innings of the Nationals-Phillies game and became woman st louis cardinals jersey increasingly irritable with each examination. He directed his rage at Phillies manager Joe Girardi, who was later ejected for jawingDooney & Bourke at Scherzer. The checks didn't seem to faze the three-time Cy Young winner too much; he earned the win, pitching five inningsMLB Shoes and Socks wChristian Yelichhile giving up just a run and striking out eight.

Needless to say, these antics will be fairly common as MLB attempts to implement these rule changes on the fly.