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The focus all week is on the all-heavyweight main card. But let’s not lie – the UFC 146 prelims are pretty stacked. See what four of its top competitors have to say.

Junior dos Santos was a mostly unheard of Brazilian and a heavy underdog for his debut at UFC 90 against Fabricio Werdum. He changed it all with one uppercut.

Thursday’s pre-fight news conference for UFC 146 takes place at the MGM Grand. You can watch it live at HeavyMMA at 2 p.m. Eastern.

HeavyMMA’s Megan Olivi talks to Shane del Rosario making his UFC debut at UFC 146 against Stipe Miocic on Saturday in Las Vegas.

HeavyMMA’s Megan Olivi talks to former heavyweight champ Frank Mir about his UFC 146 title fight against Junior dos Santos, and also touches on Alistair Overeem.

HeavyMMA’s Megan Olivi talks to Lavar Johnson, who has won back-to-back Knockout of the Night bonuses, about taking a UFC 146 bout with Stefan Struve three weeks after his last fig…

Roy Nelson catches up with HeavyMMA’s Megan Olivi to talk about the opponent switch to Dave Herman for his UFC 146 fight on Saturday and his upcoming entry into fatherhood.

Former UFC heavyweight champion Cain Velasquez talks about his UFC 146 fight against Antonio Silva and the opponent switch from Frank Mir.

UFC heavyweight champion Junior dos Santos says if you use PEDs, you should be out of competition. Oh yeah – he talks the big title fight with Frank Mir this weekend, too.

Go behind the scenes of UFC 145 with light heavyweight champion Jon Jones in the second part of this exclusive look from “UFC Ultimate Insider” on Fuel TV.

Go inside the training camp of UFC heavyweight champion Junior dos Santos in Brazil before his Saturday fight against Frank Mir at UFC 146 in Las Vegas.

Randy Couture, on “UFC Tonight” on Fuel TV, said Brock Lesnar, the man who took his heavyweight title, belongs alongside him in the UFC Hall of Fame.

If you missed the second episode of the three-part “UFC 146: Dos Santos vs. Mir Primetime” series, you can catch it in full here at HeavyMMA, commercial-free.

Go behind the scenes with Junior dos Santos in the days leading up to his UFC on Fox heavyweight title win over Cain Velasquez in Part 2 of this unique video.

Get up close and personal with UFC 146 main event heavyweight Frank Mir, who talks to Jon Anik of “UFC Ultimate Insider” about his fight life.