Phil Miller of the Star Tribune helps us tell what is going on here:
When Chris Colabello swung at the John Danksâ€™ second-inning pitch in Game 1, Brian Duensing jumped up in the Twinsâ€™ bullpen and yelled at Jared Burton, â€śCâ€™mon â€” Punch me! Punch me!â€ť
And thatâ€™s how the Twinsâ€™ bullpen â€śbrawl,â€ť which you are guaranteed to see on sports highlight shows several times this weekend, got started.
Burton and Duensing have been planning the prank for awhile â€” since last season, actually, when former Twin Matt Maloney came up with the idea. Noting that relief pitchers are often seen in the background when a home run is hit into the bullpen, Maloney suggested they stage a fight for the cameras to pick up.