Ten-man Swindon extended their unbeaten run to nine League Two games with a hard-fought 2-1 win over Grimsby.
Luke Jephcott and Ronan Darcy scored for Swindon either side of a Ryan Taylor strike as Saidou Khan saw red for two bookable offences.
Chances were scarce early on but Swindon began to increase the pressure as Jephcott turned the ball into an empty net after teammates Frazer Blake-Tracy and Darcy were denied by Grimsby keeper Max Crocombe.
Jephcott saw a deflected low strike wide as Swindon stayed ahead, but Grimsby responded against the run of play as Taylor netted a finish into the bottom corner.
Swindon regained the lead shortly before half-time when Ben Gladwin stole the ball from Andy Smith to give Darcy a touch.
Khan was dismissed in the 62nd minute but, as Grimsby pushed and probed, they were unable to make their power play count.