Ryder Cup captains Luke Donald and Keegan Bradley are in contention after their opening rounds at the PGA Championship, sparking talk of playing captains in September's showdown at Bethpage Black.

Europe's Donald, a 47-year-old Englishman, fired a bogey-free four-under-par 67 to stand one stroke behind US leader Ryan Gerard with US captain Bradley on 68 after 18 holes at Quail Hollow.

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