Wawrinka rallies to win Casablanca opener
The 17th-ranked Wawrinka, who won this clay-court event in 2010, had seven aces.
It's Wawrinka's third clay-court tournament this year, having reached the final before losing to David Ferrer in Buenos Aires.
Also, seventh-seeded Robin Haase of the Netherlands and Kenny De Schepper of France will meet in the next round.
Haase beat Roberto Bautista Agut of Spain 6-3, 2-6, 7-5, and De Schepper eliminated Steve Darcis of Belgium 6-3, 6-4.