TAMPA — Gaither finished a solid first regular season under coach Jason Stokes with a shutout of Riverview.
The Cowboys (7-3) started slow but found their stride on their second possession of the game as Alex McGough threw the first of his three touchdown passes to Shug Ogunleye, this one from 20 yards.
Frustrations grew for Gaither, however, as it turned the ball over on its last three series of the half.
"We left four touchdowns on the field with mistakes," Stokes said. "If we don't get better, we're not going to go far. But this was a good game for us because Alex (McGough) made some nice plays and we were able to rest some of our other key guys for the playoffs."
McGough led the way for the Cowboys as Ogunleye and others took the majority of the night off. McGough threw for 165 yards and rushed for 65, including a 27-yard run that was Gaither's only score on the ground.
Steven Maines surpassed 1,000 rushing yards for the season for Riverview (1-9) during the fourth quarter. He finished the game with 104 yards on 25 carries.
David Rice, Times correspondent