Old news though,
OLYMPIC DOUBLES SELECTION
Among the principal reasons for the choice of Pospisil is that Milos Raonic is in the singles event and that could potentially clash with the doubles once both events begin. Equally, Pospisil will be able to practice doubles full-time with Nestor in the lead up to the Olympics – and the two might play a couple of ATP events together, including Eastbourne before Wimbledon and Newport the week after
Even if he had played doubles, Raonic’s main focus would probably still have been on the singles.
A further bonus is that Pospisil will get a chance to participate in the Olympic Games. [...]