Mills was ejected by home-plate umpire Alfonso Marquez, who had thrown out Michael Bourn a night earlier for arguing a call at first base. Mills argued with Marquez in the top of the fifth inning Sunday, when a pitch thrown by Roy Oswalt to Padres pitcher Tim Stauffer was called a ball. Stauffer wound up hitting a two-run double on a 2-2 count.
In the bottom of the inning, Stauffer threw a similar pitch down in the zone that was called a strike, prompting Mills to yell from the dugout at Marquez, who threw him out. Mills came onto the field and argued with Marquez for a few minutes before walking off the field to a standing ovation.
Coincidentally, Mills spoke at length before Sunday's game with reporters and said the idea of managers getting thrown out on purpose to pump up a team is overrated, though it does have its place.
"If you've got a legitimate argument, then you can pile on," he said.