TRUMAN — Derek Shoen continues to hit the baseball with authority.

Shoen pounded out two extra-base hits, including a walk-off grand slam home run in the bottom of the seventh inning, to propel the Fairmont Martins to an 11-0 dismantling of the Heron Lake Lakers during amateur baseball action Wednesday night in Truman.

Ahead 7-0 through six and a half innings, Shoen collected his third through sixth RBIs with one swing of the bat during the home half of the seventh.

Blake Crawmer singled, Luke Becker walked and Jack Waletich worked out a base-on-balls to load the bases for Shoen.

Shoen drove the next delivery over the fence in Truman — the Martins third baseman’s home ballpark during his high school playing days — to end the game via the 10-run rule.

Starting pitcher Matt Lytle and the trio of Fairmont relievers — Jon Traetow, Ethan Hurn and Tyler Tennyson — combined to hurl a three-hit shutout. Lytle, Traetow and Hurn worked two innings each, while Tennyson closed out the seventh.

Spencer Chirpich and Crawmer each produced RBI singles to stake the Martins to a 2-0 lead in the bottom of the second inning.

Hurn singled and reached second base on an errant pickoff attempt before Chirpich singled him home. Chirpich later circled the bases when Crawmer cranked an RBI single.

Fairmont doubled its lead to 4-0 in the home half of the fourth behind one swing by Luke Becker. Tennyson reached on an error before Becker drilled a two-run home run.

Shoen generated his first two RBIs of the game during the Martins’ three-run sixth at-bat. Tennyson walked, Luke Becker was hit by a pitch and both runners scored on Shoen’s double. Shoen later crossed the plate on Levi Becker’s RBI single.

The Fairmont Martins (10-2) play host to Worthington at 7 p.m. next Wednesday night. The game is tentatively set for Truman.