For Europe, Graeme McDowell and Rory McIlroy played with Luke Donald and Martin Kaymer, Harrington and Peter Hanson went out with Lee Westwood and Ross Fisher with Edoardo Molinari and his brother Francesco taking on Ian Poulter and Miguel Angel Jimenez.
Former world No. 1 Luke Donald was tied for seventh on 66, while fellow 2012 Ryder Cup players Ian Poulter, Graeme McDowell, Lee Westwood, Dustin Johnson and Steve Stricker were on 68 in a group also including British Open champion Ernie Els, runner-up Adam Scott and Louis Oosthuizen -- who was second at the Deutsche Bank event.