Several questions for the future of Anthony Mundine's boxing career have arisen after he endured five knock-outs from Joshua Clottey's left hand in a power-packed bout on Wednesday night at Newcastle Entertainment Centre.

The WBA rank no. 3 in international super welterweight division got unanimous points decision from judges, 116-108, 115-109, 117-108, after he was sent to floor during the third, sixth and 10th rounds.

Although the Australian boxer showed remarkable heart to get up each time and finished the fight on his feet, his boxing career was greatly at stake. It was his sixth defeat in his all-time 52 fights.

The 38-year old boxer wants to rest and unwind immediately after the action-packed fight. In a Yahoo Sports report, Mudine said, "I don't want to think about that now," when asked about his boxing future.

"I finished the fight on my feet and at the end of the day you've got to have a go and fight the best," he added.

Mundine only had two fights since his defeat with Manny Pacquiao in 2010. Despite this, he still showed an indomitable performance throughout his fight with Clottey.

He still has his crisp jabs intact but his punches came rarely as Clottey rained him with huge left and overhead right punches.

Clottey's straight right blow at the end of the third round shocked Mundine and sent him to the canvass.

The heated bout became more action packed during the sixth round. But Mundine was still no match to Clottey's "Hitler" punches that sent the Australian boxer to floor twice.

Mundine also suffered from Clottey's crisp left punch at the middle of round eight. Clottey's series of powerful blows stamped his unanimous win at the end of the fight.

At the end of the day, Mundine said his defense wasn't strong enough against the dominant blows from his opponent. "I got caught early and didn't recover the way I wanted to," he cited.

Despite the speculations on bidding goodbye to boxing after he lose the bout, Mundine is still looking at the possibility of having a boxing rematch with Danny Green or Daniel Geale, his Australian arch-rivals.