We break down the fields for you and note that the men's field is short on African talent - could that open the door for a win by America's Dathan Ritzenhein? Molly Huddle will have her hands full on November 6 as Mary Keitany is looking for a 3-peat against Berlin champ Gladys Cherono, 2015 NYC runner-up Aselefech Mergia and Joyce Chepkirui.