Ingrid Martins and Ninomiya fall in Prague quarters to Czech sisters
The fifth-seeded pair lost in three sets to Alena and Jana Kovackova at the WTA 250 hard-court event in the Czech Republic.
The fifth-seeded Brazilian-Japanese pair was eliminated one day after winning their opening match at the hard-court event.
Alena and Jana Kovackova saved two match points before completing the comeback victory.
The sisters overcame Martins and Ninomiya on Thursday to advance past the quarterfinal stage.
With information from Tênis Brasil.