ATP Memphis Open results

Following are the first round results on Tuesday from the second day of the ATP Memphis Open (prefix number denotes seeding):

Bernard Tomic, Australia bt Igor Sijsling, Netherlands, 4-6, 6-3, 6-2

5-Ivo Karlovic, Croatia, bt Lukas Lacko, Slovakia, 7-6 (9-7), 6-3

Ryan Harrison, United States, bt Malek Jaziri, Tunisia, 7-6 (7-3), 7-6 (7-1)

Austin Krajicek, United States, bt Mikhail Kukushkin, Kazakhstan, 6-2, 6-7 (3-7), 7-6 (10-8)

Denis Kudla, United States, bt Thanasi Kokkinakis, Australia, 6-3, 6-4

Sam Groth, Australia, bt Lu Yen-Hsun, Chinese Taipei, 6-4, 6-3

Endi