Christian Harrison and Neal Skupski win US Open for second Grand Slam men’s doubles title

NEW YORK — American Christian Harrison and British partner Neal Skupski won their second Grand Slam men’s doubles title of the year by defeating Germany’s Kevin Krawietz and Tim Puetz 6-4, 7-6 (6) in the U.S. Open final on Saturday. Harrison and Skupski were playing just their second tournament together when they won the Australian Open in January. They are the fourth men’s team to win these two majors in the same year since Melbourne went to hard courts in 1988. “It’s been a great year,” Harrison said. “To get two titles like this, I’m speechless — and to do…