The Flying Antelopes struck in the 10th minute when Obaje converted from the penalty spot to give the visitors the lead at the Southern Delta University Stadium.
The early goal provided Rangers with the platform to pursue all three points on the road, while Warri Wolves were left chasing an equaliser.
Despite the hosts’ efforts to get back into the contest, Rangers held on to their slender advantage to claim a valuable victory away from home.
Obaje makes the difference
Obaje’s 10th-minute spot-kick was the defining moment of the encounter, separating the two sides in a closely fought contest.
The Rangers forward kept his composure from the penalty spot, giving his team an early lead that they would protect until the final whistle.
The result represents an important away success for the Flying Antelopes as they continue their NPFL campaign.
Match details
• Warri Wolves: 0
• Rangers International: 1 — Godwin Obaje 10' (pen)
Rangers will take confidence from securing maximum points away from home, while Warri Wolves will look to respond in their next league fixture.