Tough at the top: Zverev's reign as No. 1 starts with Paris loss

PARIS -- Alexander Zverev 's tenure as the No. 1 player in men's tennis started with a 7-6 (5), 6-2 loss to Lorenzo Musetti in the second round of the Paris Masters on Wednesday. Zverev moved to the top ranking on Monday, capping off a fine season that saw him win the first two Grand Slam titles of his career at the French Open and US Open. Despite playing on a fast indoor court that suits his serve and aggressive ground strokes, the imposing German looked out of sorts against Musetti.