Kickboxing Osbourne a knockout

Ozzy and Sharon Osbourne were in Thailand to watch their son Jack fight in his first Thai kickboxing match.

The only son of rock star Ozzy and his wife donned boxing gloves and a traditional headband before knocking out a veteran Thai fighter known as The Man in just eight seconds at a stadium in the seaside resort town of Pattaya, The Nation newspaper said.

The celebrity couple cheered from ringside during the bout, held after Jack spent about three weeks training at the Fairtex Muaythai Fitness Camp, near Bangkok.

The young Osbourne took up the sport after deciding to give up alcohol and drugs and get healthy, a move supported by his father, who also gave up drinking last year.