Tennis: ATP World Tennis results

Results from the fourth day of the $1.3 million ATP World Tennis Tournament in Rotterdam on Thursday (x denotes seeding):

2nd rd

Tomas Berdych (CZE x3) bt Nicolas Mahut (FRA) 6-4, 6-3

Jerzy Janowicz (POL) bt Tommy Haas (GER x6) 6-4, 6-4

Ernests Gulbia (LAT) bt Grigor Dimitrov (BUL x8) 6-4, 7-6 (7/3)