Trainer Chad Brown sent out a quartet of Breeders' Cup aspirants to work over Belmont Park's dirt training track, led by GI Toyota Bluegrass Stakes winner Sierra Leone (Gun Runner), who covered a half-mile in :48.67. Runner up in the GI Kentucky Derby and third in the GI Belmont earlier this spring, the $2.3 million yearling purchase races for Mrs. John Magnier, Michael Tabor, Derrick Smith, Westerberg, Rocket Ship Racing and Brant. "He looks super, and the horse is really training well," Brown said of the GI Breeders' Cup Classic...