Competing in the event for the first time since 2017, Croatia's Marin Cilic kicked off grass-court season with a 6-7 (5), 6-4, 7-5 upset of seventh-seeded Canadian Denis Shapovalov in opening-round action of the Libema Open Monday at ‘s-Hertogenbosch in the Netherlands.
Marin Cilic kicks off grass season with Denis Shapovalov upset
