23:49 CET - 19-year-old Nikola Bartunkova has moved into the next round in Guadalajara, while Solana Sierra also clinched a win in Sao Paolo.
22:00 CET - Fran Jones and Tiantsoa Sarah Rakotomanga Rajaonah are the next players through in Sao Paulo, both moving through with straight-set wins.
21:02 CET - Indonesian player Janike Tjen has continued her recent solid form on the WTA Tour, claiming a crushing 6-1, 6-0 win over Martina Okalova in Sao Paulo.
18:30 CET - Hello and welcome back to action from Sao Paulo and Guadalajara with another busy night of tennis.
In early action from Sao Paulo sees Britain's Francesca Jones take on American Whitney Osuigwe from 20:00 CET as Jones looks to build on her opening round win.
Other big names in Sao Paulo later tonight are rising star Alexandra Eala and Argentine Solana Sierra.
Follow all the action from Sao Paulo here.
The other WTA tournament this week is in Guadalajara, and Sloane Stephens will finally get to finish her tightly fought match against Lucrezia Stefanini after it was suspended yesterday due to adverse weather conditions.
Elsewhere, Elise Mertens takes to the court overnight in a clash against Elsa Jacquemot.