Mahesh Bhupathi and Max Mirnyi advanced to the semi-finals in the $556,000 ATP Tour event in Estoril, Portugal, on Thursday.
The top seeded Indo-Belarusian pair easily beat Jarkko Nieminen of Finland and Russian Andrei Stoliarov 6-2, 6-2 in a quarter-final match.
They take on Jiri Novak and Petr Pala of Czechlovakia, who beat Chile's Fernando Gonzalez and Tommy Robredo of Spain 6-2, 6-2 in another quarter-final.