SAN LUIS POTOSI, March 24, 2016

Third seed Andre Ghem headlined second round action on Wednesday at the $50,000 San Luis Open Challenger. The world number 172 from Brazil defeated Mexican wild card Lucas Gomez 6-3, 6-2. Ghem lost his service only once and capitalized on five of his own break point chances to prevail in one hour and 12 minutes. He will take on Marcelo Arevalo next. The qualifier from El Salvador rallied past fifth seed Matteo Donati 6-7, 6-4, 6-3 in two hours and 20 minutes.

Pedja Krstin knocked out sixth seed Mathias Bourgue 6-3, 6-4. The 21-year-old from Serbia sent down six aces and converted three of his five break point opportunities to advance after one hour and 22 minutes. Krstin will face Caio Zampieri in the quarterfinal. The Brazilian qualifier continued his good run in Mexico when he ousted Robin Stanek 6-3, 6-1 in only 55 minutes. Zampieri saved all two break points he faced, converting four of his own.