Zuffa wanted the Strikeforce Grand Prix to continue in September.

Alistair Overeem wanted it to continue in October.

Looks like Zuffa won.

MMAFighting.com is reporting that Overeem’s decision not to fight in September has caused him to lose his spot in the tournament altogether.

UFC president Dana White, who as a Zuffa co-owner oversees the Strikeforce brand, told MMA Fighting that Overeem is out. White’s confirmation backed up an original report from Tatame, which reported that Overeem was out and Daniel Cormier will replace him.

But while there was speculation as to whether this meant the end of Overeem’s run in Strikeforce, White also told MMA Fighting that while Overeem is out of the tourney, he is still employed by the company.

A September 10 semifinal would have been a three-month turnaround, and Overeem said that he could not be ready after taking vacation and nursing some injuries. He added that Zuffa had threatened to remove him from the tournament if he would not participate.

A heavyweight Grand Prix doesn’t make sense without Overeem taking place. It seems like Zuffa is trying to rush this Grand Prix through in order to develop bigger plans, but making one of the top heavyweights in MMA an outcast isn’t really going to help the cause.