Four-time stakes winner Muth worked a half-mile in 47.40 seconds on Monday at Santa Anita, moving closer to a scheduled start in the Breeders’ Cup Dirt Mile on Nov. 2 at Del Mar.
The exercise was Muth’s first workout since the 3-year-old colt finished last of six in the Grade 1 California Crown on Sept. 28 at Santa Anita, a loss trainer Bob Baffert described a day later as leaving him “very puzzled.”