Munich - Sixth-seeded Thomaz Bellucci advanced to the second round of the BMW Open when Mikhail Youzhny fell ill and retired Monday as bad weather, including light snowfall, disrupted the opening day.
Bellucci was leading 6-3, 1-0 when Youzhny quit. The ATP could not give details of his illness.
Ivan Dodig advanced when he beat Ernests Gulbis 7-6 (3), 6-2.
Play at the outdoor clay-court tournament was briefly interrupted several times as unseasonably cold weather hit the Bavarian capital.
Also, Lukas Rosol beat Denis Istomin 6-7 (2), 6-4, 7-6 (2) and Santiago Giraldo defeated wild-card entry Mischa Zverev 7-5, 7-6 (5).
David Goffin is the top-seeded player in the event, with a bye into the second round, while Juan Martin del Potro is slated to make his clay-court comeback after nearly three years fighting a wrist injury.