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Rolan Sallai scored the opener in the 12th minute after showing good skill to bring a botched corner clearance under his spell before firing home through a forest of limbs.

Erzurumspor had a good opportunity to equalise in the 19th minute with a free-kick on the edge of the box, but Martin Rodriguez sent his direct effort well off target.

A minute later, Gala doubled its lead when Yunus Akgun scoreed at close range, Osimhen the provider with a cutback after charging down the left wing in possession with the home side all at sea in defence.

Moments before half-time, Osimhen turned scorer to make it 3-0 to the visitors, pouncing on a shocking error from Erzurumspor goalkeeper Matija Orbanic, who mis-controlled a simple back-pass from Yakub Kirtay on the edge of his penalty area to allow the Nigeria star to steal the ball and roll it into the empty net.

The second half saw Galatasaray equally dominant , although Erzurumspor almost pulled one back on 77 minutes when substitute Fernando shot just wide, but the game was sealed three minutes later when Osimhen bagged his second, tapping home a neat centre from Gabriel Sara.

Osimhen now has four goals in two matches after his double in the 2-2 draw with Corum last week, and he will hope to add more to his tally when Galatasaray hosts Goztepe next weekend.

For newly-promoted Erzurumspor, it's been a tough start to life in Turkiye's top flight, with two heavy defeats leaving it bottom of the table with no goals scored and seven conceded and a trip to Genclerbirligi up next weekend.