Jason Day and Dustin Johnson withdraw from Pro-Am at The Barclays

PGA Championship winner Jason Day and world No 7 Dustin Johnson have both been forced to withdraw from the Wednesday Pro-Am ahead of The Barclays.

Day, ranked second in the FedExCup points standings, suffered a back injury but still hopes to play in the first of four season-ending play-offs, while Johnson pulled out due to illness.

"Jason tweaked his back moving an item under his motor coach last night," Cornel Driessen, Day's physiotherapist and trainer, said. "This is a precautionary withdrawal for a long-standing disc issue."

The Australian is due to feature alongside Bubba Watson and new world No 1 Jordan Spieth in the opening two rounds at Plainfield, while Johnson has been grouped with Danny Lee and Patrick Reed. 

Johnson struggled through seven holes of the Pro-Am before having to end his round early due to 'severe chest congestion', but also hopes to recover in time to play this week. 

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"It became evident that he needed to leave the course and get as much rest as possible before tomorrow's opening round," a statement by Johnson's management team said. "He is now under a doctor's care, in the hope of a speedy recovery.

"Needless to say, he is doing everything possible to be ready for the important weeks ahead."

Day was replaced in the Pro-Am by Brendan Steele, while David Hearn took the place of Johnson.

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