On August 7, 2001, Hernández was the home plate umpire for a game between the Chicago Cubs and the Colorado Rockies at Wrigley Field. In the bottom of the 6th inning, Hernández controversially called Cubs infielder Ron Coomer out at the plate.  Former Chicago Bears defensive tackle Steve McMichael, who was visiting the Cubs television booth and who was the guest singer for Take Me Out to the Ball Game during the seventh-inning stretch, told those in attendance over the PA system that he would "have some speaks" with Hernández after the game, presumably because of Hernández's call against Coomer. A visibly angry Hernández was shown on camera glaring at McMichael from the field.  McMichael was subsequently ejected from the ballpark; it was initially thought that Hernández had ordered the ejection.  It later emerged that crew chief Randy Marsh had ordered the ejection, threatening to stop the game unless McMichael was removed from the ballpark.  Later, the umpires received an apology from then-Cubs general manager Andy MacPhail for McMichael's conduct.