A former high-school basketball star could get up to 25 years in prison in the shooting of an old court rival if he’s convicted by the Brooklyn Supreme Court jury that got his case on Monday.

Davontay Grace, once a hoops guard at East New York’s Jefferson HS, has been charged with the attempted murder of Dexter Hopkins.

Prosecutors allege Grace, 24, pulled a gun on Hopkins during a January 2015 encounter in Sheepshead Bay and shot him six times.

The victim, also 24, who remarkably survived the barrage of bullets, had been a guard for Sheepshead Bay HS, a basketball rival of Jefferson.

Grace fled and was collared two months later.

He also faces charges of assault and criminal possession of a weapon.

Jurors will continue deliberations Tuesday.