Bushue did not figure into the decision as Lexington pushed two runs across in the eighth inning to beat Greensboro 2-1, on Monday.
The Astros' second-round pick in 2009 retired the first 11 Grasshoppers in order before allowing a two-out single in the fourth inning to Rand Smith. Bushue (2-1) didn't allow a runner to reach second base until the seventh, when Chris Wade stole second with two outs, and he did not issue a walk for the first time this season.
The 18-year-old right-hander lowered his ERA to 2.04 with his outing. He has allowed five earned runs in his last five starts, striking out 25 during that stretch.
In the bottom of the eighth, Kody Hinze hit his South Atlantic League-leading eighth homer, a two-run blast that just eluded the glove of Greensboro center fielder Justin Bass.
J.D. Martinez, a New York-Penn League All-Star in 2009, picked up a pair of singles and scored on Hinze's homer. Jonathan Meyer, the Astros' third-round pick in 2009, doubled for the Legends (14-18).
Jose Trinidad (2-1) earned the win in relief for Lexington, allowing a run on two hits and fanning two in 1 2/3 innings. Kirk Clark picked up his third save, allowing a run-scoring triple to Kyle Skipworth before getting Kyle Jensen to hit a grounder back to the mound to end the game.