Written 2 years ago by Will O'Callaghan

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A shoulder injury has forced defending champion J.B. Holmes to withdraw from the defence of his Shell Houston Open golf title today.

The big hitting American is now a major doubt for the Masters at Augusta next week.

Shane Lowry tees off his opening round in Houston at twenty to seven Irish time this evening.

Padraig Harrington is hoping to win the tournament to earn an 11th hour invite to the Masters.

Image – Scott Halleran/Getty Images

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