Williams, a 6-foot-2 senior, completed 15 of 19 passes for 350 yards and no interceptions.
"He had a phenomenal game tonight," Amory coach Trent Hammond said. "We've got some good skill guys who can catch the ball and run. His offensive line fights to protect him."
For Amory (5-2), now 1-0 in Division 1-4A play, Jaylon Fair had TD catches of 55, 12 and 11 yards. Dario Robinson had a 55-yard scoring grab in the first quarter while Abaris Woodrick had TD catches for 15 and 13 yards.
Hammond was concerned about a letdown after his Panthers knocked off the Journal's No. 1-ranked small school, Calhoun City, last week.
"Our coaches did a good job and our kids really tried to stay focused," he said.