Third baseman Danny Valencia was facing closer Jonathan Papelbon with no outs and the scored tied, when on a 1-1 count, Papelbon threw a high and inside fastball that West ruled was a foul tip off the bat of Valencia.
Valencia, though, argued it didn't hit his bat and Gardenhire came out to argue, but was swiftly tossed by West, even though replays showed the ball never hit Valencia's bat. Valencia later popped up to first baseman Adrian Gonzalez for the first out of the frame.
Gardenhire said he was simply told by West to stay away from the batter's box and when he got too close to West he was thrown out for arguing.
"That's pretty much it," Gardenhire said. "He didn't want me to come onto his dirt."
It marked the second time this season Gardenhire was ejected and the 54th time in his career. He was tossed earlier this season on April 18 in Baltimore, when home-plate umpire Chris Guccione threw him out for arguing a called third strike against Jason Kubel.