Carlos Alcaraz says he has entered the ATP Finals "with motivation" as he moved a step closer to the year-end world number one ranking with victory over Alex de Minaur.
The 22-year-old Spaniard won his opening group match 7-6 (7-5) 6-2 in one hour and 40 minutes in Turin, Italy.
Alcaraz is making his third appearance at the season-ending tournament but has never reached the final before.
He withdrew injured in 2022, lost in the semi-finals on debut a year later and failed to qualify from the group last year.
Alcaraz is battling rival Jannik Sinner for the top ranking, with the Italian moving back to the top spot after his victory at the Paris Masters last week.