It’s the case of old vet vs. rookie this Friday, as Kendall Grove fights for the Bellator MMA middleweight title against Brandon Halsey.

“Da Spyda,” of Maui, HI, creeped out of the Hawaii scene and onto the world stage by winning The Ultimate Fighter Season Three back in 2006 — at a time when TUF was building UFC champions. In total, he has enjoyed a twelve year MMA career, including a five year run in the UFC — recording a 21-14-1 record.

In contrast, Halsey, of Huntington Beach, CA, has only been fighting three years — amassing a 9-0 record. A former NCAA Division 1 wrestler, Halsey enjoyed two big wins in the Bellator Middleweight Tournament last year, earning a chance at the division’s dominant champion Alexander Shlemenko. He won that bout by first round submission to complete his fast rise to Bellator’s top tier.

So, it would already seem to be an interesting bout between the two, with the brash Grove in a new role of grizzled old vet.

But Grove made it all a little more interesting with comments to MMA Report last week, where he accused his opponent of performance enhancing drug use.

“Let’s just say I have friends that use to train with him and he left an email open,” Grove said. “In that email, there was like a chemist’s list of a bunch of sh-t that was addressed to him, about how to cycle on and off. No way you can look the way he looks with all of those veins and stuff. F— him. Piece of s—.”

Halsey responded on Twitter:

However, representatives of the California State Athletic Commission told yesterday that both were randomly tested this week — and came back negative.

The two will meet at the main event of Bellator 137 Friday in Temecula, CA.