Dear Urban Diplomat: Can we reclaim our soccer pitch without looking like jerks?

Dear Urban Diplomat, I play a casual game of pickup soccer with a bunch of other late-30s dads on weekends at Bickford Park. For the last few weeks, a crew of beer gut–less university students has asked to get in on the game. It’s a public space, so we felt compelled to say yes, but we quickly realized they’re showboaters. They hog the ball, aggressively slide-check and perform obnoxious goal celebrations. We don’t want to play with them anymore, but they keep showing up. How can we reclaim our pitch without looking like jerks or, worse, middle-aged wusses? —Kicked Around, KOREATOWN