Big UFC Fight Officially Off, UFC 145 Tonight, More

- Alistair Overeem is now officially out of the UFC 146 main event next month against Junior dos Santos for the UFC heavyweight championship. Overeem had failed a surprise pre-fight drug test that he was given last month, but was still slated to apply for his license for the fight next week. Frank Mir will now face dos Santos in the main event. You can get more details on this story at FightLine.com by clicking here.

- One of the biggest UFC events of the year takes place tonight from the Philips Arena in Atlanta, Georgia. UFC light heavyweight champion Jon Jones will defend his title against former champion Rashad Evans in the main event of tonight's card. FightLine.com will have live, round-by-round coverage of tonight's event, you can check it out by clicking here.

- You can watch the UFC pre-show Fight Day Live this afternoon at 6pm ET/3pm PT. Fight Day Live hosts Dave Farra and Megan Olivi will get you prepared for tonight's event, and Chael Sonnen will be live on the show to talk about his new book and his big fight with Anderson Silva. Strikeforce heavyweight title contender Daniel Cormier will also stop by to chat about his fight with Josh Barnett in May. You can check out the show below at 6pm ET/ 3pm PT.