Stan Wawrinka and Grigor Dimitrov are part of a strong ATP Challenger field in Aix-en-Provence this week. The Open Aix Provence Crédit Agricole includes four top-50 players and also features other big names in action across Challenger events in Aix-en-Provence and Cagliari. The event stands out as one of the more stacked stops on the Challenger circuit this week.