The Sharks celebrate a spectacular length of the field try to Valentine Holmes.

Sharks fullback Valentine Holmes has suffered a grade two hamstring strain, scans revealed following Cronulla's trial match loss to the Broncos on Saturday night.

The injury occurred during the second half of the match and rules Holmes out of the upcoming World Club Challenge, but the club has not yet ruled him out of the start of the NRL season.

"It's not as bad as we thought," Holmes told sharks.com.au

"It's a grade two strain which puts me out of the World Club Challenge. We don't want to rush it and come back too soon."

Sharks coach Shane Flanagan said Holmes could still be fit in time for the Telstra Premiership season opener against Brisbane.

"He just felt his hamstring grab a bit when he jumped and over-extended in trying to score. It's possibly a three to four-week injury which means he is unlikely to play in the World Club Challenge," Flanagan said.

This article first appeared on Sharks.com.au