Pretoria - Bulls scrumhalf Piet van Zyl has been ruled out of rugby for the remainder of the season after suffering a knee injury in their Super Rugby win over the Lions at Loftus Versfeld.
Van Zyl ruptured his ACL in his left knee, Bulls team doctor Org Strauss confirmed on Monday.
Dean Greyling, who was injured in a vehicle accident last week, picked up a hematoma on his right leg and will be back on the training field on May 18.
Midfielder Burger Odendaal is also not training this week due to an ankle injury picked up in the match, but will be ready to play on May 11.
Rudy Paige is also scheduled to return to the field of play next Monday, following his knee rehab.
The long term injury list still sees Pierre Schoeman (knee), Bandise Maku (pectoral) and Ruan Steenkamp (knee) out until July 31, while Duncan Matthews (knee) and Ryan Nell (knee) set to return at the end of August.
Carlo Engelbrecht's ankle injury should be cleared at the end of May.