Spieth in upbeat mood as playoff momentum builds

Aug 26, 2016; Farmingdale, NY, USA; Jordan Spieth watches his second shot on the 13th hole during the second round of The Barclays golf tournament at Bethpage State Park - Black Course. Eric Sucar-USA TODAY Sports

(Reuters) - Reigning FedExCup champion Jordan Spieth heads into this week's Deutsche Bank Championship in buoyant mood with his swing in good order as he builds momentum for the second of the PGA Tour's four lucrative playoff events.

The American world number three tied for 10th at The Barclays on Sunday and has good memories of this week's venue, the TPC Boston in Norton, Massachusetts, where he shared fourth place on his tournament debut in 2013.