Teenager Joao Fonseca hit American Learner Tien to beryllium crowned the second- youngest victor of the Next Gen ATP Finals title aft Jannick Sinner successful 2019.
The 18-year-old Brazilian, who was the youngest subordinate successful this year's title and lowest ranked, overcame Tien 2-4 4-3 (10-8) 4-0 4-2 successful Jeddah.
Fonseca won each 5 of his matches astatine the season-ending tourney for the top-ranked antheral players aged 21 and under.
The brace besides met successful the group shape connected Thursday, pinch Fonseca, classed 145th successful the world, again coming retired connected apical against his 19-year-old opponent.
The arena has a best-of-five format pinch 4 games winning a set.
As good arsenic world number 1 Sinner, different erstwhile champions see four-time Grand Slam victor Carlos Alcaraz and world number 11 Stefanos Tsitsipas.
Tien started brightly and took the opening group successful Saudi Arabia. But erstwhile Fonseca sewage himself level aft a tight 2nd group that went into a agelong tie-break, he was capable to frustrate his force and seal the title successful the 4th set.