Tim Simona will be be a handful for the Storm yet again as they travel to Campbelltown Stadium to face Wests Tigers in Round 21.

Expert tips: Round 21

NRL.com's writers put their reputations on the line with their fearless predictions for this weekend's matches.

Nigel Wall (Editor - success rate 58.0%): Sea Eagles, Bulldogs, Eels, Cowboys, Roosters, Warriors, Rabbitohs, Storm

Dominic Brock (Production Editor – 64.2%): Sea Eagles, Bulldogs, Eels, Cowboys, Roosters, Warriors, Rabbitohs, Storm

Tony Webeck (Chief Queensland Correspondent – 62.5%): Sea Eagles, Bulldogs, Eels, Cowboys, Dragons, Warriors, Rabbitohs, Storm

Chris Kennedy (National Correspondent – 59.8%): Sea Eagles, Bulldogs, Eels, Cowboys, Roosters, Raiders, Rabbitohs, Storm

Matt Encarnacion (Western Sydney Correspondent – 58.6%): Sea Eagles, Panthers, Eels, Cowboys, Roosters, Warriors, Rabbitohs, Storm

Dan Walsh (Staff Writer – 60.5%): Broncos, Bulldogs, Eels, Cowboys, Roosters, Warriors, Rabbitohs, Tigers 

Jack Brady (Staff Writer – 56.2%): Broncos, Bulldogs, Sharks, Cowboys, Roosters, Raiders, Knights, Tigers

Adrian McMurray (Producer – 59.0%): Sea Eagles, Bulldogs, Eels, Cowboys, Roosters, Raiders, Rabbitohs, Storm

Corey Rosser (NZ Correspondent – 57.1%): Sea Eagles, Bulldogs, Sharks, Cowboys, Roosters, Raiders, Rabbitohs, Storm

Matt Harris (Queensland Correspondent – 61.4%): Sea Eagles, Bulldogs, Sharks, Cowboys, Roosters, Warriors, Rabbitohs, Storm

Will Botoulas (Melbourne Correspondent – 60.4%): Sea Eagles, Bulldogs, Eels, Cowboys, Roosters, Warriors, Rabbitohs, Storm

Steven Ross (North Queensland Correspondent – 60%): Sea Eagles, Bulldogs, Eels, Cowboys, Roosters, Raiders, Rabbitohs, Storm

Top picks (61.1%): Sea Eagles, Bulldogs, Eels, Cowboys, Roosters, Warriors, Rabbitohs, Storm