No. 4 Carreno Busta reaches quarterfinals at Rio Open

Austria's Dominic Thiem returns the ball to Serbia's Dusan Lajovic at the Rio Open tennis tournament, in Rio de Janeiro, Brazil, Wednesday, Feb. 22, 2017. (AP Photo/Felipe Dana)

RIO DE JANEIRO (AP) Fourth-seeded Pablo Carreno Busta has reached the quarterfinals of the clay-court Rio Open, defeating Victor Estrella Burgos 6-2, 4-6, 6-2.

The Spaniard will face Alexandr Dolgopolov, who won his second-round match on Thursday against Horacio Zeballos 7-6 (4), 4-6, 6-4.

Carreno Busta is one of only three seeded players remaining in the tournament, which saw top-seeded Kei Nishikori of Japan beaten in the first round.

The favorite now is No. 2 Dominic Thiem, who will face Diego Schwartzman in the quarterfinals. No. 5 Albert Ramos-Vinolas will play Nicolas Kicker.