ROTTERDAM Feb 15 World number seven Juan Martin Del Potro stayed on course for his second successive appearance in the final of the World Indoor Tournament by sweeping aside Finn Jarkko Nieminen 6-3 6-4 on Friday.
The Argentine, beaten in last year's final by Roger Federer, will play Grigor Dimitrov in the last four after the Bulgarian came from behind to defeat Cypriot Marcos Baghdatis 6-7 7-6 6-3 in a thriller.
"There are no easy matches here," Del Potro told reporters. "Nieminen played some excellent forehands on important points and I had to stick to my game plan and be patient."
The 21-year-old Dimitrov looked down and out when he trailed 6-5 in the second set but he then reeled off 18 consecutive points to level the match, including taking the tiebreak 7-0, before going on to reach his final indoor semi-final.
"I can't remember ever scoring 18 straight points before and I didn't even notice it during the match," said the Bulgarian.
Top seed and defending champion Federer meets Frenchman Julien Benneteau in his quarter-final later on Friday. (Editing by Tony Jimenez)