The Mad Ants won their eighth straight game with a 104-102 road win over the Los Angeles D-Fenders on Wednesday.
Ron Howard's layup with 1.5 seconds left was the difference.
Fort Wayne (11-10) trailed most of the second half, but outscored Los Angeles 31-24 in the fourth quarter to win.
Tony Mitchell led the Mad Ants with 29 points, Luke Harangody added 16 points and 12 rebounds, Darryl Partin 15 points, Doron Lamb 12 and Sadiel Rojas 10.
Miles Plumlee, recently sent back to the Mad Ants from the Indiana Pacers, had nine points and seven rebounds.
Howard finished with seven points.
The D-Fenders (6-11) led 33-17 after the first quarter.