South Sydney Rabbitohs marked Sam Burgess' return to NRL action with a 42-10 thrashing of Sydney Roosters on Sunday, although the emphatic win was soured by second-half injuries to Adam Reynolds and John Sutton.
Reynolds was integral to a dominant first-half display that saw the Rabbitohs put up 26 unanswered points at Allianz Stadium.
However, the half back was subsequently forced off with a suspected broken jaw and Sutton also left the field late on clutching his left pectoral muscle.
"Sutto with a pec and obviously Adam with the jaw will have scans in the next couple of days to find the extent of those," said South Sydney coach Michael Maguire.
The Roosters, who clinched a third successive minor premiership last season with a 30-0 victory over the Bunnies, had no answer to Reynolds' kicking game in the first half.
Tries to Cameron McInnes, Aaron Gray, Paul Carter and Alex Johnston put the visitors in total control, while a trademark bulldozing run from a standing start enabled Greg Inglis to touch down and heap further misery on Trent Robinson's men - as the suspended Mitchell Pearce watched on from the stands.
Although England winger Joe Burgess crossed twice after the interval on his Roosters debut, the Rabbitohs won easily courtesy of further tries from Kyle Turner, Bryson Goodwin and Hymel Hunt.
In Sunday's other fixture, two tries from Anthony Don helped Gold Coast Titans to a 30-12 home win over Newcastle Knights.
Former Knights player Zeb Taia - back in the NRL after three seasons in Super League with Catalans Dragons - was also among the scorers for the Titans.