Updated 1.44pm: A Canterbury builder has today admitted assaulting cricket star Jesse Ryder outside a Christchurch bar two years ago.

The 39-year-old man was initially charged with assault and injuring with reckless disregard for the safety of Ryder who was in an induced coma for nearly three days after the assault.

He was due to stand trial in March but today he pleaded guilty at Christchurch District Court to an amended charge of assault with intent to injure.

His name suppression was continued by Judge Stephen O'Driscoll today until he is sentenced in May.

The man's 22-year-old nephew earlier admitted charge of assault following the altercation with the controversial cricketer outside a Merivale bar on the night of March 28, 2013.

He will also be sentenced on May 6.

Both men have been remanded on bail.

Otago Cricket have declined to comment on the guilty plea.

The left handed batsman has played for the province since moving from Wellington after the attack.

He's currently in New Plymouth playing in a clash against the Central Stags, looking to book a spot for the Otago Volts in the Ford Trophy one day final against the Auckland Aces.