Picturesque Provence Thriving On ATP Challenger Tour Entering its 10th year on the ATP Challenger Tour, the Open Aix Provence Credit Agricole has fast become one of the signature clay-court events on the calendar. During the second week in May, players and fans flock to the French town of Aix-en-Provence, where Diego Schwartzman lifted the trophy in 2014 and Frances Tiafoe claimed his first title on red clay in 2017. Former World No. 10 Arnaud Clement has made a successful transition to tournament director, leading the Challenger 175 event at the Country Club Aixois.