Tinkoff's Peter Sagan is already confirmed for both events, competing for the first time since 2010 and becoming the first world champion to race in either since Cavendish won Kuurne-Brussels-Kuurne in 2012.
They face a ban of between 15 and 45 days following the recent positive test of Eduard Vorganov. Any ban longer than the minimum of 15 days would mean they would not be at either Kuurne-Brussels-Kuurne or Omloop Het Nieuwsblad.
World Tour teams entered in both races include AG2R La Mondiale, BMC Racing Team, Etixx-Quick Step, IAM Cycling, Lotto-Soudal, Orica-GreenEdge, Giant-Alpecin, Katusha, LottoNL-Jumbo, Tinkoff, and Trek-Segafredo.
Professional Continental teams at Omloop Het Nieuwsblad include Bora-Argon 18, CCC Sprandi Polkowice, Direct Energie, Roompot Oranje Peloton, Southeast Venezuela, Topsport Vlaanderen-Baloise, Wanty-Groupe Gobert, Fortuneo-Vital Concept, ONE Pro Cycling, Stölting Service Group, Cofidis and Nippo-Vini Fantini.
At Kuurne-Brussels-Kuurne, Team 3M and Crelan-Vastgoedservice will take the place of Stölting and CCC Sprandi Polkowice.
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