Sharks head coach JP Pietersen admitted his side paid a heavy price for costly indiscipline after their first United Rugby Championship defeat of the season.
Lions coach Ivan van Rooyen conceded his side was well short of the required standard after the Bulls ran in nine tries in a dominant 57-15 United Rugby Championship performance.
The Stormers bounced back from a defeat overseas last week to beat the Sharks 39-22 to record a bonus-point victory in their United Rugby Championship clash at the DHL Stadium.
Ivan van Rooyen expects the Bulls to pose a markedly different threat from the side the Lions beat at Loftus Versfeld last season, with the Pretoria outfit showing greater attacking intent under Johan Ackermann.
The Bulls have called for greater discipline and sharper execution as they prepare to host the Lions at Loftus Versfeld on Saturday, with captain Hanro Liebenberg warning that ill-discipline could prove costly against their Gauteng rivals.
Sharks coach JP Pietersen believes Saturday's United Rugby Championship derby against the Stormers will provide a valuable test of his team's identity, with the aerial battle and forward exchanges expected to play crucial roles at DHL Stadium.