What do you believe in? Youth or experience? Ranking or form? Keep these questions in mind during Tuesday's three must-see matches.

The American framed the incident around the importance of fair play after receiving a hindrance call because the umpire didn’t see she had accidentally hit her opponent at net.

Both world No. 1s were among a slew of current top players and tennis legends who took to social media to celebrate the 20-time Grand Slam champion.

The American will look to capture the fourth title of her career in Sunday's final of the grass-court tournament.

Nestled in the heart of Central Florida, top U.S. talents prepared for the European clay swing in their own backyard.

In Asheville, N.C., this should feel like a tie among friends and allies, rather than enemies. The prevailing nation advances to November's 2022 Finals.

The 2020 champion defeated Alison Riske in a statement opening match at the Dubai Duty Free Tennis Championships.

In front of his home fans, the 25-year-old Kokkinakis outlasted Arthur Rinderknech 6-7 (6), 7-6 (5), 6-3.

The American has warmed up for AO in strong form winning an all-American final in Adelaide against Alsion Riske.

Also, Anett Kontaveit and Paula Badosa moved up to new career-highs after phenomenal finishes to 2021.