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Lock Scott and utility back Jordie came off the bench to join No. 10 Beauden when the All Blacks smashed Samoa early last year. Scott also joined his brothers on the field as a 78th minute replacement against the British and Irish Lions in the third test in Auckland.
Before the Lions series, Beauden talked of how farm life and typical sibling rivalry has a hardened their resolve. Backyard sport often went into extra time, with youngest brother Jordie particularly keen to get the final say.
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"Mum would call for dinner and it (the game) would always go 10 minutes extra," Beauden said.
"It would be most likely him (Jordie) flying at you, getting up crying and he would come back that little bit harder next time."
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The Whitelocks, Sam, George and Luke, are the only recent-era trio of All Black brothers.
The Brownlies (Cyril, Maurice, Laurie) and Nicholls (Mark, Ginger, Harold) played nearly a century ago.