It was a big day for Peyton Nash at Cadwell Park.

He played a key role in Mitchell Post 18's doubleheader sweep on Wednesday, hitting an extra inning walk-off single in Mitchell's 7-6 Game 1 win over Sheridan, Wyoming, then tossing a gem on the mound in a 5-3 win to complete the sweep.

"Good close games against a good competitive team," Mitchell coach Luke Norden said. "... I thought our pitchers did an awesome job tonight."

In Game 1, Nash came to the plate in the bottom of the 10th inning with two outs and runners on first and second. Mitchell only had one hit in extra innings up to that point. But Nash delivered.

He hit a walk-off single into right field, pushing Koby Larson, who had three RBIs, across the plate for the winning run. Nash finished 2-for-6.

Timely runs were a theme for Post 18 in the first game. Sheridan plated four runs in the sixth on three hits and a walk to take a 6-5 lead. However, Carson Max hit his team-leading fourth home run in the bottom half of the inning.

With the game tied, Mitchell put the ball into Isaac Rew's hand following Brady Hawkins' six-inning start. Hawkins gave up six runs (one earned) and struck out six. Rew out-dueled Carter Dubberley, tossing four shutout innings of one-hit baseball.

"Rew did a phenomenal job throwing relief in that first game," Norden said. "He pounded the strike zone with very few balls thrown."

In Game 2, Nash worked out of jams all night, including for the final out. With the bases loaded and two outs, Jaren Brewer hit a hard line dive, but Larson made a diving grab at second to end the game.

With his off-speed pitches working, Nash limited Sheridan to three runs on nine hits and struck out six in a complete-game effort.

"I thought Peyton did the best job all year in all of our games throwing off-speed for strikes," Norden said. "Not trying to strike guys out with a curveball out of the zone, just trying to get his off-speed over for strikes."

Post 18 needed another comeback, too. Despite only six hits, an improved approach led to five runs between the third and fourth innings to erase a 3-0 deficit. Larson, Carson Max and Carter Max all had RBI singles.

With the lead in hand, Nash, with the help of Larson, worked out of a bases-loaded jam in the fifth, as well. With the bases loaded, Larson caught a line drive and tossed it to Calvin Hegg to complete the inning-ending double play.

Rich Hall suffered the loss, allowing five runs (three earned) in a four-inning start.

Mitchell (9-7) hosts Gillette, Wyoming, at 5 p.m. today.