Wahpeton Post 20 opened the East Region Tournament with a walk-off win in 10 innings, besting the Fargo Post 400 Astros 6-5 on Thursday in Casselton.

Jack Rittenour picked the perfect time to deliver his first hit of the game, singling home the game-winning run to give Post 20 the victory over the eighth-seeded Astros.

Top-seeded Wahpeton put four runs on the board in the opening inning, but struggled at the plate for much of the game afterward.

Caden Kappes and Caden Hockert each had a pair of hits and a run. Kappes also had an RBI.

Jackson Fliflet went 1-4 with two RBIs and a run.

Jayden King started on the hill, striking out eight batters in four and a third innings while giving up five runs and six walks.

Kappes relieved King for three and two-third innings, finishing with a strikeout and two walks.

Braxton Pauly pitched all of the extra innings and didn’t give up any runs.

Post 20 continues the tournament at 4 p.m. Friday against the winner between the West Fargo Vets and Fargo Bombers. That game can be heard on B92.7.