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Cameron Munster of the Storm is tackled during the round 21 NRL match between the Wests Tigers and the Melbourne Storm at Leichhardt Oval on July 31, 2015 in Sydney, Australia. (Photo by Cameron Spencer/Getty Images)

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David Nofoaluma of the Tigers is tackled during the round 21 NRL match between the Wests Tigers and the Melbourne Storm at Leichhardt Oval on July 31, 2015 in Sydney, Australia. (Photo by Cameron Spencer/Getty Images)

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Tigers fans celebrate a try during the round 21 NRL match between the Wests Tigers and the Melbourne Storm at Leichhardt Oval on July 31, 2015 in Sydney, Australia. (Photo by Cameron Spencer/Getty Images)

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Sam Kasiano of the Bulldogs is tackled by Dylan Napa (L) and Jared Waerea-Hargreaves (R) of the Roosters during the round 21 NRL match between the Sydney Roosters and the Canterbury Bulldogs at Allianz Stadium on July 31, 2015 in Sydney, Australia. (Photo by Matt King/Getty Images)

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Kane Evans of the Roosters offloads the ball in a tackle during the round 21 NRL match between the Sydney Roosters and the Canterbury Bulldogs at Allianz Stadium on July 31, 2015 in Sydney, Australia. (Photo by Matt King/Getty Images)

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Michael Jennings of the Roosters dives over to score a try during the round 21 NRL match between the Sydney Roosters and the Canterbury Bulldogs at Allianz Stadium on July 31, 2015 in Sydney, Australia. (Photo by Matt King/Getty Images)

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Simon Mannering of the Warriors on the charge during the round 21 NRL match between the New Zealand Warriors and the Cronulla Sharks at Mt Smart Stadium on August 1, 2015 in Auckland, New Zealand. (Photo by Anthony Au-Yeung/Getty Images)

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Valentine Holmes of the Sharks fends against Raymond Faitala-Mariner of the Warriors during the round 21 NRL match between the New Zealand Warriors and the Cronulla Sharks at Mt Smart Stadium on August 1, 2015 in Auckland, New Zealand. (Photo by Anthony Au-Yeung/Getty Images)

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Sam Tagataese of the Sharks is congratulated by team-mate Jack Bird after scoring a try during the round 21 NRL match between the New Zealand Warriors and the Cronulla Sharks at Mt Smart Stadium on August 1, 2015 in Auckland, New Zealand. (Photo by Anthony Au-Yeung/Getty Images)

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Michael Morgan of the Cowboys scores a try during the round 21 NRL match between the North Queensland Cowboys and the Canberra Raiders at 1300SMILES Stadium on August 1, 2015 in Townsville, Australia. (Photo by Ian Hitchcock/Getty Images)

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Johnathan Thurston of the Cowboys looks on during the round 21 NRL match between the North Queensland Cowboys and the Canberra Raiders at 1300SMILES Stadium on August 1, 2015 in Townsville, Australia. (Photo by Ian Hitchcock/Getty Images)

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Raiders players walk from the field after losing the round 21 NRL match between the North Queensland Cowboys and the Canberra Raiders at 1300SMILES Stadium on August 1, 2015 in Townsville, Australia. (Photo by Ian Hitchcock/Getty Images)

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Willie Mason of Manly is tackled by the Broncos' defence during the round 21 NRL match between the Manly Sea Eagles and the Brisbane Broncos at Central Coast Stadium on August 1, 2015 in Gosford, Australia. (Photo by Ashley Feder/Getty Images)

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Jesse Sene-Lefao of Manly scores a try during the round 21 NRL match between the Manly Sea Eagles and the Brisbane Broncos at Central Coast Stadium on August 1, 2015 in Gosford, Australia. (Photo by Ashley Feder/Getty Images)

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The Manly Sea Eagles celebrate a try during the round 21 NRL match between the Manly Sea Eagles and the Brisbane Broncos at Central Coast Stadium on August 1, 2015 in Gosford, Australia. (Photo by Tony Feder/Getty Images)

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Knights coach Danny Buderus watches on during his team's warm-up before the round 21 NRL match between the St George-Illawarra Dragons and the Newcastle Knights at WIN Jubilee Stadium on August 2, 2015 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

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Josh Dugan of the Dragons makes a break on his way to scoring a try during the round 21 NRL match between the St George Illawarra Dragons and the Newcastle Knights at WIN Jubilee Stadium on August 2, 2015 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

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Benji Marshall of the Dragons celebrates scoring a try during the round 21 NRL match between the St George-Illawarra Dragons and the Newcastle Knights at WIN Jubilee Stadium on August 2, 2015 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

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George Burgess of the Rabbitohs is tackled during the round 21 NRL match between the South Sydney Rabbitohs and the Penrith Panthers at ANZ Stadium on August 2, 2015 in Sydney, Australia. (Photo by Cameron Spencer/Getty Images)

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Regan Campbell-Gillard of the Panthers is tackled during the round 21 NRL match between the South Sydney Rabbitohs and the Penrith Panthers at ANZ Stadium on August 2, 2015 in Sydney, Australia. (Photo by Cameron Spencer/Getty Images)

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Alex Johnston of the Rabbitohs celebrates scoring a try with team-mate Dylan Walker during the round 21 NRL match between the South Sydney Rabbitohs and the Penrith Panthers at ANZ Stadium on August 2, 2015 in Sydney, Australia. (Photo by Cameron Spencer/Getty Images)

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David Mead of the Titans catches the high ball during the round 21 NRL match between the Gold Coast Titans and the Parramatta Eels at Cbus Super Stadium on August 3, 2015 on the Gold Coast, Australia. (Photo by Matt Roberts/Getty Images)

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Kierran Moseley of the Titans is tackled during the round 21 NRL match between the Gold Coast Titans and the Parramatta Eels at Cbus Super Stadium on August 3, 2015 on the Gold Coast, Australia. (Photo by Matt Roberts/Getty Images)

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Luke Kelly of the Eels looks dejected during the round 21 NRL match between the Gold Coast Titans and the Parramatta Eels at Cbus Super Stadium on August 3, 2015 on the Gold Coast, Australia. (Photo by Matt Roberts/Getty Images)