Jesse Miller scored 17 points and Isaac Hoidal added 16, but Stevenson’s late rally fell just short.
The Bulldogs (3-4) trailed 50-36 after three quarters but cut the deficit to three points in the final minute.
Hoidal also had eight rebounds and three steals. Milled had five rebounds and five assists.
Lincoln Krog had 10 points and six rebounds for Stevenson.
CORBETT 60, STEVENSON 56
CORBETT (3-3) — Newton 18, Paintner 23, Horvath 8, J. Newton 2, Wright 2, Ziese 6. Totals 20 (3) 17-19 60.
STEVENSON (3-4) — Brady Hall 0, Jesse Miller 17, Jono Blackledge 10, Lincoln Krog 10, Preston Lowery 0, Charles Hobbs 1, Isaac Hoidal 16, Willy Lanz 1, Ethan Haight 0, Cooper Morrison 0, Bennett Wright 1. Totals 20 (8) 8-14 56.