The Buccaneers opened the season by beating Minnesota 20-17 after three first-half turnovers by the Vikings on Sunday.
Florida got its ground game on track against lower-division McNeese.
Facundo Farias added the third goal for Miami (8-14-4), which remains 14th in the Eastern Conference table.
Gauff has always taken it all in and kept moving forward, trying to learn from each setback.
Coco Gauff is the first American teen since Serena Williams more than two decades ago to reach the U.S. Open quarterfinals two years in...