From Medvedev’s match point meltdown to Fritz’s “SSOB” headband, the final Grand Slam of the year did not disappoint.

Heading into retirement has become a theme at the U.S. Open and Querrey, a 34-year-old Californian, played the last match of his career Tuesday night, losing to Ilya Ivashka of Belarus 4-6, 6-4, 7-6 ...