Cilic beats Sijsling at Paris Masters
The Croatian served 22 aces and hit 42 winners to only 17 for Sijsling.
Cilic tested positive for a banned stimulant in May but claimed he had not intended to ingest it in a glucose tablet bought at a pharmacy.
Lopez outlasted Bernard Tomic 6-4, 6-7 (4), 7-6 (1). The Spaniard failed to serve out the match at 5-4 in the second set but he recovered in the tiebreaker of the third set by winning the last six points.
Copyright 2013 by The Associated Press
This story is from ESPN.com's automated news wire. Wire index
MORE TENNIS HEADLINES
- Djokovic eases into Indian Wells semifinals
- Radwanska to face Pennetta in Indian Wells final
- Azarenka out of Key Biscayne for foot injury
- St. Louis to host U.S.-France in Fed Cup match