Ben Lam's Super Rugby season is over, with the Blues winger facing a long rehabilitation after rupturing his anterior cruciate ligament in training.
The All Blacks Sevens star will be sidelined for at least six months after surgery.
As well as missing the rest of the Super Rugby season, the injury has also ruled him out of selection for the New Zealand Sevens team to the Rio Olympics in August.
Blues coach Tana Umaga says he's hugely disappointed for Lam, who had made major strides in the off-season and had been in excellent form this season in both forms of the game.
Lam will join Blues teammate and New Zealand under-20 midfielder TJ Faiane, who has also suffered an ACL rupture, on the sidelines.