Isaac Vallie-Flagg’s impressive run has been sidetracked by injury, as the Strikeforce vet has rbeen forced to withdraw from UFC 161 due to a back injury. Vallie-Flagg was scheduled to fight Sam Stout at the June 15th event, which will be hosted by the MTS Centre in Winnipeg. The Jackson MMA fighter’s withdrawal was first reported by

Stepping in to replace Vallie-Flagg is WEC and Bellator vet James Krause. The 26 year-old is currently riding a seven fight win streak which includes a recent decision win over Toby Imada. Stout is coming off a split decision win over Caros Fodor at UFC 157 in February, after dropping a unanimous decision loss to John Makdessi last November.

Vallie-Flagg reported via his Twitter account that he has a compressed disc in his back and that a “muscle has torn off my hip”. He’s waiting to find out if surgery is required.

Hopefully the 35 year-old will be able to return to action soon, as Vallie-Flagg is currently riding a 12 fight undefeated streak. In his Octagon debut at UFC 156, he worked his way to a split decision win over Yves Edwards. That’s quite the run.

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