It’s the last busy fight weekend of the year 2014.

UFC will offer what they’re calling a doubleheader, with The Ultimate Fighter Finale tonight and a UFC on FOX event Saturday. It’s a startling contrast between the two shows: one will see the crowning of the first UFC 115 lb women’s champion, on a card without a single fighter over the lightweight limit of 155 lbs. The other features a heavyweight-laden lineup — including the return of former heavyweight kingpin Junior Dos Santos.

Showtime Boxing counter-punches with top contender Amir Khan taking on Devon Alexander tomorrow night, in what some call a dress rehearsal for an eventual Khan showdown with Floyd Mayweather, Jr.

But MMA World Series of Fighting may have a sleeper on their hands, with a showdown between two of the promotion’s biggest stars topping the bill.

World Series of Fighting Welterweight Champion Rousimar Palhares will face contender Jon Fitch at the main event of WSOF 16 tomorrow night in Sacramento, California — and according to WSOF exec Ali Abdelaziz, it’s “the weekend’s craziest fight.”

He’s also high on the co-main, a featherweight championship bout between decorated wrestler Lance Palmer and WSOF titlist Rick Glenn.

Adbelaziz told that his promotion’s two biggest attractions won’t interfere with anyone interested in watching UFC event that night, either.

“Our co-main event and main event will go on when the UFC goes off FOX,” Abdelaziz said. “We’re going to have more than one hour exclusive for people to tune in and watch. I hope they’ll watch our whole card, but if nothing else, you want to see these two title fights live, then go back and watch the rest of the fights on DVR.”

But, says Abdelaziz, their main event is the fight to watch this weekend.

“I want to know what’s going to happen,” says Adbelaziz. “I want to know if Palhares is going to heel-hook Fitch and send him to the hospital or if Fitch is going to weather the storm and dominate Palhares for five rounds. I don’t know what to expect. This is the fight I want to watch.”