Calleri, seeded fifth, was dispatched in less than an hour by Nicolas Devilder, 6-3, 6-1, while Hrbaty took the second set but was sent packing by Evgeny Korolev, 6-3, 6-7 (3-7), 6-3. They were the only Dutch Open seeded players seeing action Monday.
In other first-round play, hometown favorite Robin Haase defeated Felix Mantilla, 6-3, 6-2; Mariano Zabaleta stopped Kristof Vliegen, 6-3, 6-3; Gilles Simon beat Ruben Ramirez Hidalgo, 6-2, 6-4; and Victor Hanescu topped Albert Montanes, 7-6 (7-3), 4-6, 7-6 (7-4).
Two matches were suspended because of darkness and rain. Nicolas Massu led Thiemo De Baker 5-4 in the first set and Sergio Roitman was tied with Jeremy Chardy 6-6 in the first set when the matches were stopped.