Rio de Janeiro, Brazil (SportsNetwork.com) - Second seed Irina-Camelia Begu and No. 4 seed Madison Brengle of the United States were among Monday's first- round winners at the Rio Open tennis tournament.

The Romanian Begu blitzed Aussie Olivia Rogowska 6-1, 6-3, while Brengle was leading Ana Bogdan 6-4, 3-3 when the Romanian qualifier retired on Day 1.

In other action involving seeds, No. 5 Swede Johanna Larsson snuck past Spaniard Maria-Teresa Torro-Flor 6-7 (5-7), 7-6 (7-3), 4-2, retired and American Grace Min upended No. 8 South African Chanelle Scheepers 6-2, 6-1.

Also, Spaniard Lourdes Dominguez Lino whipped qualifier Montserrat Gonzalez of Paraguay 6-2, 6-2 and Brazilian wild card Gabriela Ce held off France's Pauline Parmentier 6-2, 6-7 (1-7), 6-0.

The top seed this week is former French Open runner-up Sara Errani.

Japan's Kurumi Nara, who is not defending her title this year, bested Czech Klara Zakopalova in last year's inaugural Rio finale.

This week's champion will claim $43,000.