Korewha dislocated his finger and split skin in the Saints' 19.14 (129) to 8.4 (52) victory at Melville Oval on Saturday but X-rays cleared him of any breaks.

Hoy suffered a head knock in a tackle. Both players are expected to play in round two.

"We only had one on the bench from quarter-time; the boys ran out of legs towards the end," Koroit coach Chris McLaren said.

Sam Dobson made a welcome return to Koroit after his VFL stint, kicking seven goals, while boom last-minute recruit Tom Couch kicked three on debut.

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McLaren was rapt with Dobson's efforts.

"He had a good duel with Jandre Slabbert to be honest but his work rate is through the roof," he said. "He can stand and deliver forward and go right up the ground."

Koroit, which named running machine Alex Pulling as its best, had its decision to play three ruckmen - Jeremy Hausler, Daniel Roache and Rhys Raymond - tested due to its lack of rotations off the bench. But McLaren said the trio played well with Hausler booting three goals.

Kangaroos coach Matt Dunn lamented his side's poor start, saying it "improved as the game wore on".

"We started using the obvious option. We were reckless with our use of the footy in the first quarter," he said.

Dunn said the highlight for the Roos was debutant Harry Waters kicking the first goal of the match with his first kick.

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