The Pearl's Preview: Round 21 - a podcast by NRL

Broncos and Maroons legend Steve Renouf joins NRL.com’s Chris Kennedy to preview all the round 21 action.

Renouf says despite their recent form struggles, both the Cowboys and Broncos will be up for another edition of the most enthralling rivalry in the NRL when they kick the round off on Thursday.

Top-eight hopefuls Wests Tigers will have their work cut out against an improving Bulldogs while Sunday’s all top four twin blockbusters will tell us plenty about the competition’s true heavyweights – and Renouf expects one to finish in an upset.