What questions will be answered by UFC 158?

The UFC heads back to Canada, the place that may as well be their home and native land with the many, rabid Canadian fans. What questions will be answered by the fights?

Can Nick Diaz back up his years of smack towards GSP? In April of 2010, I interviewed Diaz. It was a week or two after he, his brother and teammates started a melee at a Strikeforce fight on national television. He had plenty of challenges in front of him that didn't involve going to the UFC. But Diaz only wanted to talk about one opponent: Georges St-Pierre.

Now, after a loss to Carlos Condit and a suspension for using banned substances, Diaz is getting a chance to take on GSP. It's a fight he's pushed for years. Can he come through in the clutch?

Will Johny Hendricks look past this fight? After Hendricks knocked out Martin Kampmann, he was told by UFC president Dana White that he had the title shot. But then the UFC gave the shot to Diaz and put Hendricks on the same card. Now fighting Carlos Condit, will Hendricks have his mind on the title and the title on his mind, or will he take out Condit with a first-minute knockout, as he did in two of his last three bouts?

Can Nate Marquardt rebound from his loss? In the final Strikeforce event, Marquardt looked overmatched against Tarec Saffiedine. Just two months later, he's back in the cage against Jake Ellenberger, a wrestler with knockout power. Will Marquardt show that he belongs back with the UFC??

Who will keep their job? After UFC 157, White said the promotion has about 100 more athletes on their roster than they should. Every fighter is under pressure to perform well, be professional, pass their drug tests and not give the UFC a reason to cut them.

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