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MLB suspends Hector Santiago for 10 games for having foreign substance on glove, he will appeal

The Seattle Mariners have made history, with veteran LHP Hector Santiago becoming the first player punished under MLB’s midseason re-emphasis on their rules regarding “sticky stuff” a.k.a. foreign substances for pitchers on the mound.

Seattle left-hander Hector Santiago has been suspended 10 games for having a foreign substance on his glove.

He will appeal.— Jeff Passan (@JeffPassan) June 29, 2021

Santiago was investigated as all pitchers are upon leaving the game, however the umpires determined Santiago’s glove had some sticky substance on it, a violation of league rules.