Stockholm - American Jack Sock has beaten Australia's Bernard Tomic in straight sets on Tuesday to set up a second-round match with No.1-seed David Ferrer in the Stockholm Open.
The 21-year-old Sock finished off Tomic 6-4, 6-2 in just under an hour.
Fifth-seeded Ernests Gulbis of Latvia had more of a struggle as he advanced with a 6-3, 3-6, 7-6 (3) win over Jeremy Chardy of France.
Sweden's Joachim Johansson pleased the home crowd by beating Alejandro Falla of Colombia 6-1, 6-3.
Germany's Jan-Lennard Struff and Guillermo Garcia-Lopez of Spain also won their first-round matches.
Results on second day Tuesday of Stockholm ATP tournament (x denotes seeding):
Joachim Johansson (SWE) bt Alejandro Falla (COL) 6-1, 6-3
Guillermo Garca-Lopez (ESP) bt Nils Langer (GER) 7-6 (7/5), 6-3
Jack Sock (USA) bt Bernard Tomic (AUS) 6-4, 6-2
Ernests Gulbis (LAT x5) bt Jeremy Chardy (FRA) 6-3, 3-6, 7-6 (7/3)
Jan-Lennard Struff (GER) bt Milos Sekulic (SWE) 6-3, 6-0