Trepagnier's rough night came to an end with Clario Perez replacing him, but Perez was greeted by a single by Colin Moran that plated the final two runs.
The Power began the scoring in its half of the first inning when Bell hit a solo home run over the right field wall to give the team a 1-0 lead.
The homer was Bell's 11th of the season, first among current Power players on the season, just ahead of Dilson Herrera with 10. Stetson Allie hit 17 home runs in the first half of the season before being called up.
The Power maintained its 1-0 lead until the sixth inning when Greensboro tied the game. Leadoff hitter Cameron Flynn doubled, Gomez bunted him to third, and Moran hit a sacrifice fly to left field, driving in Flynn.
The loss wasted a great performance from West Virginia starting pitcher Luis Heredia, who hurled five shutout innings.
The right-hander allowed four hits, struck out three and didn't walk a Grasshopper batter. He also got out of several jams with Greensboro runners in scoring position in three separate innings.
Heredia has been solid at home all home season with a 3-0 record and 1.20 earned run average, opposed to just 1-3 and 4.97 ERA away from Power Park.
The Power had six hits on the game, but half of them were by Bell. In the bottom of the eighth inning in a 1-1 tie and Chris Diaz at second base with one out, Bell was intentionally walked.
Grasshopper reliever Beau Wright came in, and immediately got out of the jam, retiring Jordan Steranka with a pop up to second base, and a ground out to third by Eric Wood.
Contact sportswriter Christopher Wade at chris.w...@dailymail.com or 304-348-1735.