If it were not for Robert Luttrell’s wife, Myrna, there might not be a Promise Me Silver attempting to become the first Texas-bred since Got Koko in 2002 to win a Grade 1 race on Saturday. Promise Me Silver carries the hopes of the Lone Star State’s breeding program into the Acorn, a one-mile race for 3-year-old fillies on the Belmont Stakes undercard. She is seeking to improve her career record to 9 for 9.