A boxing champion's most important advantage? The rematch clause -- Devin Haney vs. George Kambosos Jr. 2

LAS VEGAS — Devin Haney pressed forward and threw shots with bad intentions, pinning his sparring partner along the ropes.

Weeks before Haney traveled to Australia for his second consecutive fight against George Kambosos Jr., he was putting the finishing touches on his American training camp, his first as undisputed lightweight champion. Haney outboxed Kambosos with ease back in June, but ahead of the rematch, he seemed to be placing his punches in an effort to make a statement and prove that his power is better than advertised.

Haney (28-0,15 KOs), ESPN's top boxer under the age of 25, captured the championship in dominant fashion with a unanimous decision over Kambosos. The 23-year-old boxed brilliantly. He stood in front of Kambosos (20-1, 10 KOs) and carved up the champion with his precise, table-setting jab and an impressive variety of punches from different angles.

The lopsided nature of the matchup didn't warrant a rematch — let alone an immediate one — but Haney is back in Melbourne, Australia, for a return bout on Saturday (ESPN/ESPN+, 10:30 p.m. ET). The reason: Kambosos' side negotiated a rematch clause ahead of the first meeting — which Kambosos exercised after the loss — a routine deal point for champions making voluntary defenses.

Top Rank Boxing is now on ESPN and ESPN+. Subscribe to ESPN+ to get exclusive boxing events, weigh-ins and more.

Saturday, 2:30 p.m. ET on ESPN+: Claressa Shields vs. Savannah Marshall, for the undisputed women's middleweight championship; Mikaela Mayer vs. Alycia Baumgardner, for Mayer's WBO and IBF women's junior lightweight titles and Baumgardner's WBC women's junior lightweight title.

Saturday, 8 p.m. ET on ESPN+: Devin Haney vs. George Kambosos Jr. 2 undercard featuring