Federico Diaz Acosta, ranked 179 and competing for Argentina, enters the Francavilla quarter-finals on a strong run of form with four consecutive set victories across his last five matches. The clay-court specialist has shown consistency in his recent performances, including a straight-sets win over Nicolas Sanchez Izquierdo and a comeback victory against E. Ribeiro. With no prior head-to-head record against Tseng, Diaz Acosta will look to maintain his winning momentum in this quarter-final encounter.

Chun-Hao Tseng, ranked 169 from Taiwan, has displayed mixed form heading into the Francavilla quarter-finals with two straight-set victories followed by three consecutive defeats. The Taiwan player's recent clay-court results show vulnerability despite his quick wins over F. Ferreira Silva and A. Guerrieri, as he has struggled against stronger opposition in the lead-up to this match. Tseng faces a challenging quarter-final test against an in-form opponent on a surface where consistency has proven difficult.