CAS said Wednesday the players want to annul their suspensions for failing repeatedly to announce their whereabouts for unannounced drug-testing.
The Lausanne-based tribunal will issue a ruling within four months.
Story continues below ↓advertisement | your ad hereWickmayer claims she was never properly informed of the online reporting requirements for drug-testing that led to her ban.
The 20-year-old U.S. Open semifinalist was suspended by a Belgian anti-doping tribunal earlier this month for failing three times to report her whereabouts for drug testing. The ban was confirmed by the International Tennis Federation.
Malisse, a 2002 Wimbledon semifinalist, was also banned for a year for the same offense.
Under the World Anti-Doping Agency's rules, elite athletes must make themselves available for out-of-competition testing for one hour a day, 365 days a year. They must give three months' notice of where they will be so they can be tested.
© 2009 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Atletico rejected big-money bidsWickmayer says testing rules weren’t explained