Francesco Laporta of Italy, Thomas Linard of France and Jason Scrivener of Australia shot a 4-under 68 to share the lead on the first day of the Trophee Hassan II on Thursday.
Five players, including Younes El Hassani of Morocco, were a shot behind on a day of tough conditions on the Red Course at Royal Golf Dar Es Salam.
Scrivener made five birdies to continue his good form in his second year on the European Tour, where he has missed just one cut in nine events.
Linard hit an eagle on No. 12, his third hole, and rolled in five birdies to make an impressive start to his 14th tour event.
Laporta, who is in his first season on tour, made up for two bogeys in his first three holes with four birdies and an eagle — also on No. 12.