Top seed Felix Auger-Aliassime cruised through his debut match at the Grand Prix Hassan II as Dan Evans crashed out in the first round.
World number nine Auger-Aliassime needed just an hour and 24 minutes to see off home hope Elliot Benchetrit 6-3 6-3.
He saved all six break points he faced to set up a second-round meeting with Slovak lefty Alex Molcan in Morocco.
But Evans' stay in Marrakech is over after he succumbed to a surprise 6-4 6-2 loss to Pablo Andujar. The Briton has now won just one of his last five matches on tour.
Lorenzo Musetti has endured a tough start to 2022 and headed into this tournament 5-7 on the year.
However, the 20-year-old delivered a reminder of his potential with a straight-sets win over fourth seed Albert Ramos-Vinolas.
Joao Sousa knocked out fifth seed Federico Delbonis but sixth seed Botic van de Zandschulp and eighth seed Laslo Djere did prevail, as did veteran Richard Gasquet.