Guan, who had qualified for the Masters as the Asia-Pacific Amateur champion, earned low amateur honours at the year's first Major after a 73-75-77-75 set of rounds left him with 12-over 300 total.
The Chinese prodigy had no three-putts during the tournament and nothing worse than a bogey on his scorecards. A one-stroke penalty for slow play in his second round was his only hiccup.
He spent a month in the New Orleans area last year and has practiced at Lakewood Golf Course not far from TPC Louisiana, venue for the April 25-28 Zurich Classic.
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