NEW YORK – As late as two hours before a scintillating U.S. Open women’s final between Angelique Kerber and Karolina Pliskova, you could have landed a ticket in the promenade section of Arthur Ashe Stadium for as low as $23. Demand had taken a significant tumble over the previous day-and-a-half after Pliskova scored the upset of the tournament, knocking off Serena Williams in straight sets in the semifinals. The women’s final was expected to be a showdown for Player of The Year honors between Kerber (winner of the Australian Open, finalist at Wimbledon, and a silver medalist at the Rio Olympics) and Williams (finalist in Australia, finalist at Roland Garros, winner at Wimbledon, and seemingly forever the No.