Alex Bogomolov takes on qualifier Dusan Lajovic in the last eight of the St Petersburg Open.
Bogomolov has spent most of his life living in the States but he's actually a dual citizen and he revealed last week that he plans to represent Russia in the Davis Cup.
He's been getting plenty of support this week from the St Petersburg crowds and in his current form he'd be a very valuable addition to the Russian squad. He battled past Philipp Kohlschreiber 6-4, 3-6, 7-5 on Thursday to make the quarters.
"It was a good match," Bogomolov said. "He was playing much better by the end of the match. He received perfectly when I was serving for the match at 5-3 up and broke me. I was lucky when he double-faulted on second match point. I'm happy that I will play in the next round."
22 year old Lajovic is only ranked 228 in the world and wasn't even seeded in qualifying but he saw off Moscow semi-finalist Jeremy Chardy in the first round earlier this week before beating Dudi Sela in three sets yesterday.
Look for Bogomolov to progress in straight sets.