كتب : Omar AbdelAziz
The Saudi Arabia captain fired home four minutes after the break to snatch a priceless win for Hilal in Jeddah.
Veteran goalkeeper Mohamed Al-Daeyea was arguably man of the match as he produced a string of fine saves to deny Ittihad and ensure his team's victory.
Hilal leveled on 48 points with Ittihad, but the Riyadh-based side took advantage thanks to their better head-to-head superiority.
Shamrani Show
Elsewhere, Nasser Al-Shamrani scored five times as Al-Shabab hammered Al-Watani 6-0 in Riyadh.
The Saudi international striker took his tally to 18 league goals, to finish top scorer, two goals ahead of Al-Hassan Al-Yami of Najran.
Al-Taei and Al-Qadsia were already relegated before the final round of the competition.