Mariners' Hector Santiago becomes first MLB pitcher ejected under new foreign substance check rules

Jacob Camenker

Mariners' Hector Santiago becomes first MLB pitcher ejected under new foreign substance check rules image

For the first time, it looks like MLB's new rules about foreign substances have unearthed a wrongdoer: Mariners pitcher Hector Santiago.

Santiago was subjected to a foreign substance check in the fifth inning of Seattle's game against the White Sox and was ejected by home plate umpire Phil Cuzzi. The umpires kept Santiago's glove for evidence after his departure from the field.

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However, Santiago claimed after the game that the substance on his glove was rosin.

"He [Cuzzi] said he felt some sticky stuff on the inside of the glove," Santiago said, per ESPN. "All I used was rosin. I used it on both sides, trying to keep that sweat from dripping down to the hands."

Santiago's glove will be tested. That's why it was wrapped up after he was tossed.

Santiago pitched 2 1/3 innings before his ejection. He allowed one run on three hits and struck out four.

The Mariners may now be without Santiago long-term in wake of his ejection, as players caught using foreign substances are subject to 10-game suspensions via MLB's revised foreign substance rules, implemented on June 21. Seattle will not be able to replace Santiago on the roster if he is, in fact, guilty of using a foreign substance.

Santiago, 33, has played in MLB since 2011 and has pitched for six different organizations. The veteran has posted a 2.65 ERA in 17 innings pitched this season, with 23 strikeouts in nine appearances during his first season with the Mariners.

Jacob Camenker

Jacob Camenker Photo

Jacob Camenker first joined The Sporting News as a fantasy football intern in 2018 after his graduation from UMass. He became a full-time employee with TSN in 2021 and now serves as a senior content producer with a particular focus on the NFL. Jacob worked at NBC Sports Boston as a content producer from 2019 to 2021. He is an avid fan of the NFL Draft and ranked 10th in FantasyPros’ Mock Draft Accuracy metric in both 2021 and 2022.