He successfully defended his second NYSAC World Lightweight Title against Allie Stoltz before 10,872 fans at Madison Square Garden in a thirteenth-round knockout on June 28, 1946. The telling blow was a right to Stolz, 2:54 into the thirteenth, but in a decisive win, Montgomery put Stoltz on the canvas as many as five times prior to the final knockout. Stoltz was down in second, sixth, and eleventh rounds. He may have lacked conditioning from his four and a half month layoff from the ring. He fought gamely and continued to take punishment, even landing a solid right to the chin of Montgomery in the sixth round.