Boxing Day is not a holiday observed on the American calendar--thanks, Revolutionary generation. However, the day after Christmas is circled in red by the horse racing cadre because it means one thing: Opening Day at Santa Anita Park. This Tuesday, an 11-race card kicks off at 2 p.m. ET under the picturesque San Gabriel mountains in Arcadia, California--six of which are graded stakes. To entice the horseplayer, the Classic Meet sports a $1 Pick Six, a 14 percent takeout on both the .50 Early and Late Pick 5, and we...