Golovkin vs Brook: Callum Smith stops Norbert Nemesapati in sixth round

Callum Smith picked up another stoppage success with Norbert Nemesapati's corner pulling him out after a clinical sixth-round bodyshot.

The youngest of the four historic boxing brothers moved to 21-0-KO16 on the same night Paul won in style and seven days before Liam takes on Mexican superstar Saul Alvarez out in America.

Smith retained his WBC Silver super-middleweight belt despite Nemesapati's (21-4-KO16) game approach but the Liverpudlian also sent out a warning to current WBC world champion Badou Jack and IBF boss James DeGale, who was ringside at The O2.

The 26-year-old again showed he carries the range and the variety to surely take on the best at 168lbs. The left bodyshot that stopped the fight in the fifth came from nowhere but landed with such precision that within a few seconds the impact left Nemesapati struggling to breath, even without his gumshield in.

Nemesapati was shorter and stockier and started well, trundling forward, but he walked into Smith's back-foot trap and was caught by a classy countering uppercut in the opening exchanges. The next round saw the Liverpudlian turn the tables and go on the attack, his jab and right hook going to head and then body constantly and another a right doing landing just before the bell.

Smith then went into combination mode, showing off his full armourym but at the end of the third trainer Joe Gallagher warned him to calm down, perhaps knowing that the WBC super-middleweight challenge is not too far away.

The irony was that when Smith lost any big-stage anxiety, Nemesapati was suddenly the one looking to impress and as he had done in the very opening exchanges, he went back on the offensive. Again though, Smith picked him off at ease - both hands from different heights and at various ranges, landing well.

Even when the Hungarian forced him onto the ropes, Smith simply swayed or stepped out of the way or just stood there and countered, the uppercut and the right working very well close-in.

In the sixth though, one particularly painful right to the temple opened the door and although Nemesapati managed to move to the other side of the ring and punch back as Smith closed in, a left to the body was all it needed to finally finish him off.

"Tonight, I felt better than at Goodison Park but I need a bit of a challenge and more fear factor," said Smith. "I need my world title shot. I believe I'm good enough to become a world champion, so why not now?

"You know as much as me. There's been talk of Badou Jack v James DeGale but it still hasn't been made. I'd like to know any time soon so I can do what I need to do with my own career."