De Vries will miss time due to a right shoulder strain suffered during Sunday's game at Single-A Lake Elsinore, AJ Cassavell of MiLB.com reports.
De Vries attempted to make a diving play in the field and paid the price. According to Cassavell, the team expects the injury to sideline one of its top prospects for the remainder of the season, though it's still too early to officially shut him down.