Alex Bolt, ranked 154 in the world, enters the Busan quarter-finals as the form player in this matchup against Ryo Noguchi. The Australian has won three of his last five matches, including a straight-sets victory over Noguchi earlier in this tournament. Bolt's recent run includes wins over Wu Tung-Lin and J. McCabe, though he suffered a loss to T. M. Etcheverry in his most recent outing before this quarter-final. With a 1–1 head-to-head record against Noguchi, Bolt will look to build on his tournament momentum on the hard courts of Busan.

Ryo Noguchi, ranked 215 from Japan, faces a challenging quarter-final encounter against Alex Bolt after losing their earlier meeting in straight sets during this tournament. Noguchi has shown mixed form in recent matches, with two wins over C. Wong and C. Chidekh offset by losses to Bolt and Wu Tung-Lin. The Japanese player's head-to-head record against Bolt stands at 1–1, giving him reason for confidence despite the recent straight-sets defeat. Noguchi will need to improve his serving and consistency on hard court to trouble the higher-ranked Australian in this Busan quarter-final.