Torquay got revenge on Bristol Rovers for appointing their manager Paul Buckle with a close victory.
Taiwo Atieno found space in the box to fire the Gulls into the lead from the edge of the area.
And four minutes later Rene Howe scored a penalty after keeper Scott Bevan brought down Kenya striker Atieno.
Byron Anthony got one back for Rovers with a close-range header and Pirates substitute Chris Zebroski fired wide against his former club.
Buckle was named Rovers boss in May, two days after his Torquay side lost in the play-off final to Stevenage and signed Bevan and Zebroski from his old club.
VIEWS FROM THE DRESSING ROOM
Bristol Rovers manager Paul Buckle told BBC Radio Bristol:
"We didn't see that coming.
"You can't legislate for individual errors - Torquay's first goal was quite good but to concede the second in the manner that we did gave us a mountain to climb.
"On a positive note, we finished the game by asking questions of Torquay but it hasn't gone for us today."
Torquay United manager Martin Ling told BBC Radio Devon:
"It proved to be a difficult place to come, but we did play particularly well to win the game.
"Rovers will be a top seven side this season, but we beat them on their home turf which is pleasing.
"For the fans it was a massive game. For the players I built it as just another away game."