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The judges' scorecards: 79-73, 80-72, 79-73.

The winner... and the new champion of the world... Lee Selby!

The damage to Gradovich was caused by a clash of heads, so we are going to the judges. Surely, surely, surely Selby has got this.

Gary Lockett
Former WBU middleweight champion on BBC Radio Wales

"(Gradovich's trainer) Robert Garcia's shaking his head, he can't believe what he's seeing. But the doctor's know what there doing."

Crack open the champers - the referee stops the fight and Lee Selby is about to be crowned the IBF featherweight champion of the world by technical decision. The judges' scorecards are about to confirm the inevitable...

The blood is gushing out of Gradovich's head now. Lee Selby is every bit the master craftsman as he drags the champion around the ring as though he has him on a lead. The ref asks the doctor to look at Gradovich's cuts...

Steffan Garrero
BBC Wales Sport commentator

"Gradovich is cut hugely round his right eye. It's a huge gash. If he wasn't sure before, now Selby knows he's hurt Gradovich. Selby has blood pouring down his back. It's not his, it's from Gradovich's cut."

Remember, Gradovich has never been beaten in the pro ranks. He's a bit of a featherweight wrecking ball, but he's looking like he's met his match against Selby. A right hand misses its target, but Selby manages to avoid the counter so no damage done. The two get in close before Selby gets on his feet and pulls Gradovich around the ring. Another solid right nestles into the Russian's forehead. Is he made of granite?

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Selby has got this fight. He just needs to maintain this performance in the second half of the fight - and he starts well, hurting Gradovich with a fine combination.

Gary Lockett
Former WBU middleweight champion on BBC Radio Wales

"Selby caught him with a huge shot right on the temple. But Gradovich's legs didn't look right. His legs have gone. If Selby sustains an attack, he's going to be in all sorts of problems, Gradovich. Dominant round for Selby. He wobbled him straight away."

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Gradovich drops his hands and invites a solid right from Selby which lands flush on the temple. Gradovich's pace has noticeably slowed as the two head back to their respective corners.

Gradovich's face is as red as a cricket fan's after a day at the Test. He's taken some punishment but doesn't take a backward step. Again, Selby needs his laces tieing but he springs back into the ring and rocks Gradovich with a booming shot which brings about some jelly legs for the Russian.

Gary Lockett
Former WBU middleweight champion on BBC Radio Wales

"It will be interesting to see how the judges are scoring this. I haven't given a lot of points to Gradovich because of Selby's jabs but Gradovich is landing some good punches. I don't like to see Selby on the ropes because that's when he's getting caught."

Each round mirrors the next. Gradovich is forcing the pace and Lee Selby is boxing nicely, but perhaps using up a lot of energy through his dancing, ducking and weaving? Only time will tell. Selby leans forward and invites an onslaught as he looks to land a counter.

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It's a credit to Lee Selby that everyone is in their seats, gripped by the action. It might not be the headline fight, but it's a fascinating contest. Gradovich doesn't look like he'll run out of steam and a left gets through Selby's defences. He gets the Welshman on the ropes and works away at the body before the ref intervenes.

Gary Lockett
Former WBU middleweight champion on BBC Radio Wales

"Gradovich is trying to get in very close to Selby, trying to just take the air out of his tyres if you like. But Selby is a very, very fit boy and Gradovich is going to get himself marked up doing that. He got a little bit close and whether it was enough to win the round I'm not sure. I'll give it even."

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I've not seen much of Lee Selby, but I'm impressed. He's got the lot, it seems. Standing at range, he evades a right and counters in style. As Ben says, that left hook is rather handy. Gradovich is throwing a lot of punches but none are really troubling the nimble Selby. There's a blow to the back of the head, which the referee warns the Russian about.

Ben Dirs
BBC Sport at the O2 Arena in London

"Some lovely skills from Selby in the opening few rounds, some of those left hooks were indeed worthy of Mayweather."

Gary Lockett
Former WBU middleweight champion on BBC Radio Wales

"He's just boxing beautifully this round Selby. Gradovich's face is marking up - as early as the third round. I'm really impressed. His jabbing was really good and he moved his feet well."

Former cruiserweight world champion Enzo Maccarinelli tweeted: , external"Brilliant boxing by Selby so far but is being made to work hard."

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Ducking and weaving, Selby is proving difficult to catch for Gradovich who has a look of menace on his face. There's a Hollywood villain role in the pipeline if he decides to leave boxing, I reckon. The referee stops things so Selby can tie his laces and the fast pace continues on resumption as Selby throws clubs from the right and to the side of Gradovich's chops. The boxer is beating the fighter here (see 20:10).