Walton played college tennis at the University of Tennessee,[2] where he won the 2021 NCAA doubles title with Patrick Harper.

[5] Following his third singles title at the 2024 Taipei Challenger, with a win over Illya Marchenko he reached the top 100 at world No.

[7] He recorded his first ATP main draw win at the 2024 Mallorca Championships defeating Yannick Hanfmann.

[8] He qualified for the 2024 Wimbledon Championships making his debut and recorded his first Major win over Federico Coria,[9] before losing to Francisco Comesana in the second round.

[10] Seita Watanabe Kosuke Ogura Dane Sweeny Kyle Seelig Luke Saville Conner Huertas del Pino Rubin Statham Calum Puttergill Miķelis Lībietis Reese Stalder Luke Saville Chung Yun-seong Patrik Trhac Arjun Kadhe Current through the 2025 Australian Open.