Defending champion Anna Karolina Schmiedlova's only previous meetings with Beatriz Haddad Maia were also on South American clay - way back in their junior days. The Slovak won 6-4, 6-3 in the first round of the 2010 Grade 1 Banana Bowl and 6-3, 6-2 in the second round of the 2011 Grade A event in Porto Alegre.
17-year-old local wildcard Maria Camila Osorio Serrano scored her maiden WTA main draw win over Conny Perrin in the first round, making this the 19th time in 22 editions of Bogota that a Colombian player has won a round here. On 15 of those occasions, there has been at least one home quarterfinalist; Osorio Serrano will bid to make it a 16th in her first meeting with lucky loser Kristie Ahn.
Kristie Ahn's first-round upset of No.1 seed Jelena Ostapenko was the American's first Top 30 win, and she will now seek to make her second career WTA quarterfinal, following Nottingham 2017, against Osorio Serrano.
No.7 seed Sara Sorribes Tormo is 1-1 against Ana Bogdan, having defeated the Romanian 6-3, 3-6, 6-1 in the Campinas ITF W25 quarterfinals on clay in 2016 but lost 6-2, 6-3 in the second round of Monterrey last year on hard courts. Bogdan's first-round win over Chloe Paquet was her first victory this season and snapped an eight-match losing streak for the 26-year-old.
17-year-old Amanda Anisimova's victory over Sabine Lisicki on Monday was the American's first career WTA main draw win on clay; she will bid to reach her third career WTA quarterfinal in her first encounter against compatriot Varvara Lepchenko.
ORDER OF PLAY
CANCHA CENTRAL (starts 11am)
Anna Karolina SCHMIEDLOVA (SVK)  vs [Q] Beatriz HADDAD MAIA (BRA)
Ana BOGDAN (ROU) vs Sara SORRIBES TORMO (ESP) 
Not before 2pm
[LL] Kristie AHN (USA) vs [WC] Maria Camila OSORIO SERRANO (COL)
Monique ADAMCZAK (AUS) / Jessica MOORE (AUS)  vs Sharon FICHMAN (CAN) / Erin ROUTLIFFE (NZL)
Not before 7pm
Varvara LEPCHENKO (USA) vs Amanda ANISIMOVA (USA) 
CANCHA 1 (starts 10.30am)
Tamara ZIDANSEK (SLO)  vs Irina KHROMACHEVA (RUS)
Laura PIGOSSI (BRA) / Renata ZARAZUA (MEX) vs Irina BARA (ROU) / Elena-Gabriela RUSE (ROU)
CANCHA 2 (starts 10.30am)
[LL] Hiroko KUWATA (JPN) vs Sachia VICKERY (USA)
Shelby ROGERS (USA) vs Astra SHARMA (AUS) - tbf 3-6, 7-6(6), 1-5
Conny PERRIN (SUI) / Bibiane SCHOOFS (NED) vs Zoe HIVES (AUS) / Astra SHARMA (AUS)