The Sunday League Equation Tee

The Sunday League Equation Tee

There’s a formula for hitting bombs. We’re pretty sure this is it.

The Sunday League Equation Tee combines batting average, OBP, slugging, a little clubhouse fuel, and some highly questionable mathematics to arrive at the only result that matters: launching rockets.

Printed on a vintage-inspired black tee with a clean, understated graphic across the chest and the Extra Innings Ball Club mark at the back neck, it’s made for guys who still care about their stats—even if nobody else is keeping track.

Details: Soft, comfortable everyday fit • Vintage black colorway • Front equation graphic • Small Extra Innings Ball Club back-neck logo • Built for Sunday League, batting cages, postgame beers, and pretending your prime isn’t behind you

Extra Innings Ball Club — Keep playing.