Photos: UA grad Baffert's horse wins Kentucky Derby
UA graduate Bob Baffert's horse American Pharoah won the 141st Kentucky Derby.
American Pharoah
Victor Espinoza rides American Pharoah to victory in the 141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/David J. Phillip)
Bob Baffert
Trainer Bob Baffert holds up the winning trophy after the 141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/Brynn Anderson)
American Pharoah
Victor Espinoza rides American Pharoah to victory in the 141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/Morry Gash)
American Pharoah
Victor Espinoza rides American Pharoah to victory in the 141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/David J. Phillip)
American Pharoah
Victor Espinoza rides American Pharoah to victory in the 141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/Darron Cummings)
Bob Baffert
Trainer Bob Baffert and owner of American Pharoah Ahmed Zayat hold up the winning trophy after the 141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/Brynn Anderson)
American Pharoah
Victor Espinoza rides American Pharoah to victory in the 141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/David J. Phillip)
American Pharoah
Victor Espinoza, left, rides American Pharoah to victory in the 141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/Garry Jones)
Bob Baffert
Victor Espinoza talks with Bob Baffert after Espinoza rode American Pharoah to victory in the 141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/Brynn Anderson)
American Pharoah
Victor Espinoza rides American Pharoah to victory in the 141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/David J. Phillip)
American Pharoah
Victor Espinoza rides American Pharoah to victory in the 141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/David J. Phillip)
American Pharoah
Victor Espinoza rides American Pharoah to victory in the141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/Darron Cummings)
Bob Baffert
American Pharoah trainer Bob Baffert, left, and owner Ahmed Zayat hold the trophy after and after Victor Espinoza rode American Pharoah to victory in the 141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/Garry Jones)
American Pharoah
Victor Espinoza rides American Pharoah to victory in the141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/Darron Cummings)
American Pharoah
Victor Espinoza rides American Pharoah to victory in the 141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/David J. Phillip)
American Pharoah
Victor Espinoza rides American Pharoah to victory in the141st running of the Kentucky Derby horse race at Churchill Downs Saturday, May 2, 2015, in Louisville, Ky. (AP Photo/Darron Cummings)