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, 2021Santiago 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.