And, after previous instances went unpunished this season, the NRL match review committee has fined Canberra's Albert Hopoate for pulling the hair of rival winger Dallin Watene-Zelezniak.
Forward Barnett found himself sin-binned for contacting Rapana's chin with his shoulder midway through the first half, forcing the Raiders winger off for a head injury assessment. Both players returned later.
On Saturday morning, the match review committee categorised Barnett's hit as a grade-two careless high tackle and handed him a one-match suspension.