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AUSTIN, Texas (AP) -- Jason Day has been exchanging text messages with Tiger Woods on all things golf, so perhaps he could lean on Woods for his latest issue.
A bad back.
Day never saw it coming in the Dell Match Play. One minute he was tapping in for par to keep his 3-up lead over Graeme McDowell, and a minute later he was reaching toward his lower back. The pain was far more obvious on his tee shot at the 16th when Day let the driver fall from his hands as he grabbed his back and grimaced.