Sascha: his nickname.
Tall: he’s 6'6", or 198cm in metric terms.
Unusual: The Economist magazine described Zverev as a “gangling giant” resembling “one of the distended figures in an El Greco painting”.
Vogue magazine has featured him twice, including in 2017 as part of their prestigious September issue.
Washington DC: one of the 11 ATP titles he has won, along with St. Petersburg, Montpellier, Munich (twice), Rome, Montreal, Madrid, the ATP Finals and Geneva. He defended his Washington DC title in 2018.
X-Factor: all the very best players need this 'ingredient' to climb the highest peaks.
Youngest: when he defeated Novak Djokovic at the 2018 ATP Finals, Zverev was the youngest year-end champion since the Serbian himself in 2008. Zverev reached his career-high ranking of No.3 last November, becoming the youngest top-three player since Djokovic in 2007. He was also the youngest player in the 2018 year-end Top 10, the 2017 top 20, the 2016 top 50, the 2015 top 100 and the 2014 top 200.
Zverev: of course.