Steve Bunce
Boxing expert on BBC Radio 5 live

"There are stiffer tests out there. Forget Mayweather, Amir Khan beat Algieri and the Americans like him and he fights big fights. But the fight with Khan has got to happen. I think it's an outdoor fight."

So that's a second successive IBF welterweight defence for Kell Brook. Who's next? Amir Khan? Manny Pacquiao?

Richie Woodhall
Former super middleweight world champion on BBC Radio 5 live

"Gavin has got to knuckle down, that's the problem to make a lighter weight. Unless he does that, his future is not in the welterweight division, he has to get down to light-welterweight."

Steve Bunce
Boxing expert on BBC Radio 5 live

"Kell had so much in store. He was laughing, smirking at times. Gavin turned away when he got hurt by a big punch. The referee has been on stop-watch since the first bell."

Gavin ended up with his head tucked in and went into survival mode as Kell Brook clinically took apart his prey. A clinical performance.

Image source, PA

And Brook forces Gavin onto the ropes. He unleashes some booming shots and the ref looks concerned... concerned enough to step in and stop the fight. A TKO victory for Brook in the sixth round.

Image source, PA

Another straight right hurts Gavin and then Brook unleashes a frightening combination. The challenger's left eye puffs up. Brook is almost standing there now, having a look and nimbly switching stances to land the shots he wants. Like he's got a sat nav.

Brook leads with the left and then clobbers Gavin with a straight right. As Mike Costello notes, Gavin has all the ability in the world but doesn't have the power to hurt Brook.

Richie Woodhall
Former super middleweight world champion on BBC Radio 5 live

"I haven't given Gavin a round yet. We seem to be waiting for Brook to step on the gas. At one point he was hurting him with big, big shots."

BBC Radio 5 live

Image source, Getty Images

"One of the best rounds we'll ever see in a British ring."

BBC Radio 5 live's boxing correspondent Mike Costello commentates on Kevin Mitchell's heroic loss to Jorge Linares after one of the most enthralling rounds in recent memory.

Mitchell was ahead on two of the judges score cards when the fight was stopped. Linares retains the WBC world lightweight title.

Spine-tingling commentary

Mike Costello
BBC Radio 5 live boxing commentator

"There's a serious blemish under Gavin's right eye. A sign of the damage that he's been taking in this fifth round."

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Kell Brook continues to look like he's nipped out to the shops. He's serene in the ring as he shows neat footwork and classic skills to nullify Gavin's southpaw threat. The champ misses with a right and a looping counter from Gavin hits the spot. Brook continues to look the part though - a Hollywood fighter. The punches begin to rain down as Gavin takes cover in the corner and a blemish opens up on his face.

Richie Woodhall
Former super middleweight world champion on BBC Radio 5 live

"Kell Brook is very confident and delivered a body shot that hurt Gavin. A lot of people will have missed it but if Brook's corner have seen it they will tell him to do more."

Mike Costello
BBC Radio 5 live boxing commentator

"Gavin holds onto Brook for the first time and that's significant. He's frightening the life out of Gavin with these heavy shots."

Left jab, right uppercut - Brook is beginning to unload some powerful shots to the chops of Gavin who looks hurt when he is caught near the ropes. Already, Brook senses blood.

Kell Brook is visibly the bigger man and he tries to chase down Frankie Gavin who is a slippery opponent. A left to the side of the face doesn't hurt Gavin who is beginning to get into this fight. Brook works away with some body shots.

Steve Bunce
Boxing expert on BBC Radio 5 live

"Frankie's boxing beautifully, it's just a lost cause. You can box beautifully and still lose."

Image source, PA

Brook lands to the right of Gavin's face - the Brummie looking like he's about to suffer some facial cuts. Brook is bossing this, without really getting out of second gear.

Brook works away in the corner, a right hand hurting Gavin, but the challenger gets his head down and drives the champions back into the middle of the ring. Again Brook gets his opponent on the ropes but he does get caught by a stiff counter.

The arena is plunged into darkness and the spotlights take effect for the third round. A very watchful start but Gavin's face is reddening as Kell Brook continually clips the former world amateur champion.