ATP roundup: Tommy Paul, Aleksandar Kovacevic make Hamburg semis
Moderated by Tomas Kauer 
(Photo credit: Mike Frey-Imagn Images)
Americans will comprise half the semifinals of the Hamburg Open, as No. 6 seed Tommy Paul defeated Germany's Daniel Altmaier 6-2, 7-5, and lucky loser Aleksandar Kovacevic extended his run in a three-set win over Argentina's Camilo Ugo Carabelli on Thursday.
One day after upsetting top-seeded Felix Auger-Aliassime of Canada, Kovacevic outlasted Ugo Carabelli 6-4, 6-7 (
