Article Photos: Dufner among 8 past Zurich champs in Big Easy 4/6

Tianlang Guan tees off on the ninth hole during the Zurich Classic pro-am golf tournament at the TPC Louisiana on Wednesday, April 24 , 2013 in Avondale, La.  (AP Photo/, Michael DeMocker) MAGS OUT; NO SALES; USA TODAY OUT; THE BATON ROUGE ADVOCATE OUT