Explained: Ben Shelton tops Tommy Paul to reach first Paris Masters semifinal, Tiafoe claims ATP Finals spot

Ben Shelton beat Tommy Paul 6-4, 4-6, 6-3 to reach his first Paris Masters semifinal

ATP Finals

The season-ending tournament in Turin featuring the top-ranked players, scheduled for Nov. 15-22

Paris Masters

A top-tier ATP tennis tournament held in Paris

ace

A serve that the opponent fails to touch, winning the point outright

seed

A player ranked for tournament bracket purposes, with the third-seeded Shelton being one such example

qualifier

A player who entered the main draw by winning a preliminary qualifying round, as Rinky Hijikata did