Rafael Nadal Defeated at U.S. Open by an American, Frances Tiafoe

Frances Tiafoe beat Rafael Nadal in four sets at the U.S. Open. The victory was the biggest of his career. It came less than 24 hours after Daniil Medvedev lost to Nick Kyrgios. The American men have not won a Grand Slam singles title in 19 years. There will be a first-time Grand slam champion for the third consecutive year. iReport.com: What do you think? Share your thoughts. iReporter: @jenniferjones.li. For confidential support call the Samaritans on 08457 90 90, visit a local Samaritan or click here.