Summary
Defending champion Rafael Nadal heads the field for the ATP Montreal Masters that starts Monday with Novak Djokovic and Roger Federer opting out of the key U.S. Open tuneup.
Federer and Djokovic aren't scheduled to resurface until the Cincinnati Masters starts on Aug. 12, giving them one tournament prior to the Aug. 26 start of the U.S. Open at Flushing Meadows, the final Grand Slam of the year.
Federer has been training on hard court at home in Switzerland after falling to Djokovic in a dramatic five-set final at the All England Club three weeks ago, in which the Swiss great held two match points.
Third seed Zverev, who won the title here two years ago with a win over Federer in the final, will open against either U.K. national Cameron Norrie or Hungarian Martin Fucsovic.
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