CBS Sports Network HD

Newly crowned bantamweight champion Sean O'Malley has his first title defense against the only man to beat him, top contender Marlon Vera. Plus, Dustin Poirier takes on Benoit Saint Denis and Michael Page makes his debut against Kevin Holland.

Action from the PBA bowling tour.

From Bowlero Brooklyn Park in Brooklyn Park, Minn.

From Bowlero Brooklyn Park in Brooklyn Park, Minn.

Action from the PBA bowling tour.

The top professionals compete for prize money on the Disc Golf Pro Tour.

Pro watercross racers take on the course at Lake Crook State Park in Paris, Texas.

From Dumke Family Softball Stadium in Salt Lake City.

Eastaboga, Ala.

From Pevely, Mo.

The BC Lions face the Saskatchewan Roughriders in Week 2 of the CFL regular season. Quarterback Nathan Rourke commands the Lions against Trevor Harris and the Roughriders as the West Division contenders clash on the gridiron.

Memorable knock-outs from throughout MMA history.

A look at Dana White's contender series alumni.

UFC Fight Flashback is an enhanced replay of some of the most memorable title fights in UFC history, featuring never-before-seen footage from state-of-the-art cameras, and exclusive new sound.

An inside look at Dustin Poirier and Conor McGregor preparing to face off again at UFC 257 in Abu Dhabi.

Go behind-the-scenes with the UFC's biggest stars in the lead up to some of the biggest fights of their careers.

Max Holloway attempts to regain his title against newly crowned champion Ilia Topuria. Plus, former middleweight champion Robert Whittaker faces undefeated Khamzat Chimaev in a title eliminator bout.

From Bowlero Brooklyn Park, Minn.

From Bowlero Brooklyn Park in Brooklyn Park, Minn.

From Thunderbowl Lanes in Allen Park, Mich.

UFC Fight Flashback is an enhanced replay of some of the most memorable title fights in UFC history, featuring never-before-seen footage from state-of-the-art cameras, and exclusive new sound.

Memorable knock-outs from throughout MMA history.

A look at the lives and training camps of UFC athletes as they prepare for the next UFC pay-per-view event.

A last-minute look at the upcoming UFC Freedom 250 event from Washington, D.C.

A last-minute look at the upcoming UFC Freedom 250 event from Washington, D.C.

From Thunderbowl Lanes in Allen Park, Mich.

New Orleans is the backdrop for this stop on the IHRA Offshore Boat Racing series, featuring powerboat action in multiple classes.

From Dinwiddie, Fla.