Hamiso Tabuai-Fidow suffered a knee injury after starring as the Dolphins gave retiring veteran Mark Nicholls a perfect farewell to lock in their best NRL season with a 62-24 win over an under-strength Canberra.
Tabuai-Fidow, playing centre, started the match four tries behind Sydney Roosters whiz Mark Nawaqanitawase (23) on the NRL season leading try-scoring list.
The man known as the "Hammer" got to 22 before leaving the field in the second half with a suspected medial collateral ligament (MCL) injury which may have implications for the post-season international Tests.
The Dolphins claimed ninth position on the ladder with the final-round victory at Redcliffe, their highest-placed finish in three seasons in the NRL.