Bellucci into last eight in Quito
Victor Estrella Burgos claimed an opening win at the Ecuador Open as Thomaz Bellucci reached the last eight.
Thomaz Bellucci advanced to the Ecuador Open quarter-finals on Wednesday, while defending champion Victor Estrella Burgos won his opener.
Bellucci, runner-up at the ATP 250 event last year, edged Serbian wildcard and former world number eight Janko Tipsarevic 7-6 (10-8) 7-6 (7-2).
Brazilian fourth seed Bellucci next faces eighth seed Renzo Olivo after the Argentinian beat Santiago Giraldo 7-6 (7-3) 2-6 6-3 on the clay in Quito.
Estrella Burgos, the only man to have won the tournament after successes in 2015 and 2016, started his campaign with a win.
The veteran world number 156 overcame Andrej Martin 3-6 6-2 6-4 in one hour, 52 minutes.
Estrella Burgos will face top seed Ivo Karlovic in the second round.
The second-seeded Albert Ramos-Vinolas advanced to the last eight with a 6-2 7-5 win against qualifier Alejandro Falla.
Awaiting him in the quarters is Roberto Carballes Baena, who ended the career of Giovanni Lapentti with a 6-3 6-4 win.
In emotional scenes after his loss, retiring 34-year-old Lapentti was in tears before being honoured in an on-court presentation.