To understand how seriously the Yankees have taken games against their division rivals, the Tampa Bay Rays, this season, consider Manager Aaron Boone’s second-inning outburst in the first game of his team’s doubleheader sweep on Thursday.

After a called strike by the rookie umpire Brennan Miller, who had already riled the Yankees, Boone loudly voiced complaints.

“A really bad start,” Boone could be heard shouting from his usual perch on the dugout steps, while D.J. LeMahieu was batting.

Deciding he had heard enough, Miller issued the first ejection of his brief major league career. Tossed from a game for the third time this season, Boone wasn’t going to disappear into the clubhouse without expressing his thoughts and stretching his vocabulary. He emerged from the dugout shouting at Miller and then bellowed into the umpire’s face.