SARATOGA SPRINGS, N.Y. — The eight horses entered in this year’s Breeders’ Cup Classic tie the record for the smallest field in the race’s 43-year history. Horse for horse, however, and race for race, the expected starters in this year’s Classic have had an outstanding year. Collectively, seven of the eight have combined to win the Kentucky Derby, Preakness and Belmont; the Dubai World Cup and Saudi Cup; as well as G1 staples that include the Wh…