Matty Johnson slugged a two-out grand slam for the X’s in the fourth, advancing the Sioux City to 5-0. It was just Johnson’s sixth career home run in six professional seasons.
Ryan Zimmerman (9-2) went the distance for the Explorers, allowing three runs on five hits to earn the win. Zach Varce (0-5) allowed five earned in eight hard-fought innings to suffer the loss.
Lincoln is now 0-9 against the Explorers on the campaign.
Zimmerman had allowed just two home runs in 82 innings before Gilmartin got to him in the fifth and Smith belted another in the ninth.
The ‘Dogs look to avoid the sweep Friday afternoon at 1:05 p.m. LHP Kevin McGovern (4-4, 5.10) will face RHP Eric Wordekemper (4-2, 5.14).