JETS failed to close the gap on one of their closest play-off rivals on Friday as they slumped to a narrow away defeat.
The Sharks have now beaten the Jets in two out of their three meetings this season, which gives them head-to-head advantage should the play-off positions be decided in that manner come the end of the season.
Justice Graham sank 23 points on the night to out-score everyone else, although Jets stars Trey Moore and Jayson Obazuaye ran him close with 22 and 21 respectively.
A tight first quarter was shaded by the Sharks, who went 27-23 up thanks to a late flurry.
Former Jet Alto Virgil ran the show for the Sharks in the second period as they stretched the lead out to 50-39, courtesy of some accurate long-range shooting and three decisive shots from beyond the arc.
The Jets got themselves back into the game after the half-time break as an 11-2 burst narrowed the gap to two points at 56-54, and it remained close at 68-63 going into the final quarter.
With five minutes remaining, the Sharks were clinging to a 78-75 lead after withstanding an 8-0 burst from the Jets.
A three-pointer from Graham made the Sharks more comfortable, however, as they closed out the game to earn a narrow win.