City Zip is already a legend in his own time at Saratoga. He earned that status last year by becoming the fourth horse in history to win all three of Saratoga's top juvenile races -- the Saratoga Special, the Sanford (gr. II), and the Hopeful (gr. I). This year, City Zip turned in one of the top efforts of the meet when he won the grade II Amsterdam on Aug. 3. He's now looking to increase his legendary status with a win in Saturday's grade I $200,000 King's Bishop.What has helped endure City Zip to the fans is his tenacity. Last year he closed late to get a nose on the wire and dead-heat Yonaguska in the Hopeful to complete his historic sweep. In the six-furlong Amsterdam, just several days ago, he ran hard every step of the way with the Speightstown through splits of :21 3/5; :44 4/5; and :57 2/5, lasting for a one-length victory in 1:11. He is now four-for-four at Saratoga. City Zip's cause may be helped on Saturday by an abundance of speed, Keats, unraced since the Kentucky Derby (gr. I); Squirtle Squirt; The Goo; Orientate and Illusioned all seem to like the lead. That leaves City Zip, lightly raced Bay Head King and Shore Breeze to pick up the pieces. Bay Head King.The field for the $200,000 King's Bishop includes: Orientate (Mark Guidry, 115); The Goo (John Velazquez, 115); Bay Head King (Gary Stevens, 115); City Zip (Jorge Chavez, 124); Keats (Larry Melancon, 124); Squirtle Squirt (Jerry Bailey, 121); Illusioned (Pat Day, 119); and Shore Breeze (Edgar Prado, 117).