Seven of the Top 15 players in the world will be in Rotterdam this week led by young stars Daniil Medvedev and Stefanos Tsitsipas.
Montpellier winner and defending champion Gael Monfils is seeded third followed by David Goffin, Fabio Fognini, Roberto Bautista Agut, Andrey Rublev and Denis Shapovalov.
Medvedev will take on Vasek Pospisil who just made the Montpellier finals. Tsitsipas takes on Hubert Hurkacz, Shapovalov drew Grigor Dimitrov and Fognini collides with Karen Khachanov.
Medvedev could meet Rublev in the quarters while Tsitsipas might face Shapovalov in his last eight.
Teens Felix Auger-Aliassime and Jannick Sinner are also in the field.
Last year, Monfils beat Stan Wawrinka in the final.
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