Gamba went looking for the win from the start, and Patric was denied by a saving tackle in the 13th minute, with Yuki Yamamoto's follow-up blast caught nicely, but well-held by Jakub Slowik in the Vegalta Sendai goal.
Just before the quarter-hour mark the home team had a chance after some tricky footwork from Takuma Nishimura found space and he managed to chip the on-rushing Masaaki Higashiguchi in goal, but Kim Young-gwon had anticipated the attempt and cleaned up behind his 'keeper. Vegalta then managed to get the ball in the net as both teams had chances, but it was rightly ruled out for offside, and the Gamba defence breathed a sigh of relief.
Gamba finally took the lead in the 35th minute as Patric rose like a majestic salmon to head home a Yuki Yamamoto corner to make it 1-0 and then Takashi Usami tried to make it two with a bullet strike after a run from the half way line, but Slowik was there again to deny! 1-0 at the break.
Slowik was in action again just after the restart as Patric was given space and closed in on goal from the left, but his side-footed shot aimed at the bottom corner was smothered by the Polish 'keeper.
The away goal lived a charmed life in the final quarter as Vegalta Sendai racked up the goal attempts, but none of them were good enough to take a point and Gamba earned their third successive win.
Team - Higashiguchi, Miura, Suganuma, Kim, Onose (Kurata, 83), Kurokawa, Okuno (Tiago Alves, 83), Yamamoto, Yajima (Yanagisawa), Usami (Wellington Silva, 63), Patric