Rio de Janeiro - Defending champion Diego Schwartzman retired from the Rio Open on Wednesday because of a right leg injury.
The fourth-seeded Argentine player trailed Uruguay's Pablo Cuevas 6-1, 4-1 when he stopped playing. The first-round match began on Tuesday and was interrupted by rain.
Cuevas, the 2016 winner, will face Argentina's Juan Ignacio Londero in the round of 16.
In second-round matches, Jaume Munar of Spain beat Cameron Norrie of Britain 7-6 (8/6), 5-7, 7-6 (7/4); Bolivia's Hugo Dellien topped Roberto Carballes Baena of Spain 7-5, 6-4; and Slovenia's Aljaz Bedene beat Thiago Monteiro of Brazil 6-3, 6-4.
Results on Wednesday in the ATP Rio Open (x-denotes seeded player):
Taro Daniel (JPN) bt Thiago Wild (BRA) 3-6, 6-3, 6-2
Pablo Cuevas (URU) bt Diego Schwartzman (ARG x4) 6-1, 4-1 retired
Aljaz Bedene (SLO) bt Thiago Monteiro (BRA) 6-3, 6-4
Hugo Dellien (BOL) bt Roberto Carballés (ESP) 7-5, 6-4
Jaume Munar (ESP) bt Cameron Norrie (GBR) 7-6 (8/6), 5-7, 7-6 (7/4)
Félix Auger-Aliassime (CAN) bt Christian Garín (CHI) 7-5, 6-4