Japan's Kei Nishikori plays a backhand during the U.S. Open qualifying second round in New York on Aug. 26, 2026. (AP/Kyodo)

NEW YORK - Japan's soon-to-retire Kei Nishikori moved within a win of the U.S. Open main draw Wednesday after beating 16-year-old American Michael Antonius 6-4, 6-4 in the second round of qualifying.

The 36-year-old Nishikori went up 4-0 in the first set and 3-0 in the second before sealing the win with an ace in a commanding 1-hour, 16-minute match at Flushing Meadows, where he was runner-up in 2014.

Related coverage: