Having needed three sets to get beyond Daniil Medvedev and Roberto Bautista Agut in his last two outings, Federer appeared in danger of needing a decider again when he trailed 4-1 in the second-set tie-break.
Federer defeated Roberto Bautista Agut of Spain 6-3, 2-6, 6-4, a day after being taken the distance by Daniil Medvedev of Russian Federation. But even in defeat, both Federer and Zverev have qualified for the season-ending ATP Finals, featuring the world's top eight players on November 11 in London.
Novak Djokovic continued his superb form by beating Croatia's Borna Coric in the final of the Shanghai Masters.
Coric, who defeated Federer in three sets at the Halle Open final in June, earned a break in the opening game of both sets on Sunday to wrap up the victory with an excellent forehand pass after 73 minutes. Federer dumps Kei Roger Federer blazed into the semi-finals with a 6-4, 7-6 (7/4) victory over Kei Nishikori as the Swiss great's title defence belatedly caught fire.
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He fled Saudi Arabia in September 2017, and had since written newspaper articles critical of his home country. The Trump administration, however, is heavily invested in the long-standing, USA relationship with Riyadh.
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A source told ET that the 26-year-old singer has been suffering from depression since undergoing a kidney transplant last year. DBT is a talking treatment based on cognitive behavioural therapy that is used to develop new coping skills.
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Foreign minister Kang also on Wednesday said the measures were a key obstacle to the restarting of South Korean tourism to Mt. Asked about Kang's remarks and consultation with South Korea , Trump said, "They won't do it without our approval".
Federer's wife Mirka and their four children were in the arena and he said afterwards: "I'm not sure if they give me more courage fighting on court, but they were here today".
Speaking in Shanghai, the 31-year-old Djokovic said there was "confusion" with the two competing events coming so close together and being so similar.
Djokovic said that he was relishing facing "top player" Zverev after the 14-time Grand Slam champion beat Kevin Anderson 7-6 (7/1), 6-3.
Djokovic is targeting his 72nd career title here on Sunday.
Djokovic, who has returned to his brutal best this season with Grand Slam wins at Wimbledon and the US Open, will surpass Federer as world number two when the next edition of the ATP rankings are released on Monday.