Last year's finalist Taylor Fritz beats late entry Lorenzo Musetti at ATP Finals
Fritz had lost his last three meetings against Musetti but took advantage of a longer prep period for a 6-3, 6-4 win.
TURIN, Italy (AP) — Taylor Fritz got off to a strong start at the ATP Finals by beating late entry Lorenzo Musetti 6-3, 6-4 on Monday.
Fritz reached the final of the tournament for the season's top eight players last year.
Musetti was a late replacement for Novak Djokovic, who withdrew with an injured shoulder after beating the Italian in the Athens final on Saturday.
Read more: Novak Djokovic and Lorenzo Musetti "had a laugh" about surreal final days of ATP Finals race
Later, defending champion Jannik Sinner was playing Felix Auger-Aliassime in a rematch of their recent Paris Masters final won by Sinner in straight sets.
Sinner and Carlos Alcaraz, who won his opener on Sunday, are still fighting for the year-end No. 1 ranking.