Battle of Midway, Princess Lili B and Arms Runner had never raced at Canterbury Park, save for an occasional appearance on the track’s simulcast screens. The three thoroughbreds were running under the winter sun of Southern California when they died earlier this year, joining the list of 23 racehorses that have suffered fatal injuries at Santa Anita Park. The toll of those bleak 96 days, though, has been felt all over the country — including in Shakopee, where Canterbury Park will begin its 25th racing season Friday.