VANCOUVER, British Columbia (AP) — Nathan Chen made some mistakes at the Grand Prix Finals, yet was good enough to win the gold medal. Chen, the first American men's world champion since 2009, overcame a fall on his quad Lutz in Friday's free skate, but still took the top spot with a combined score of 282.42. Americans Madison Hubbell and Zachary Donohue had the top score in the rhythm dance, posting