2018 Novak Djokovic tennis season - Wikipedia
Djokovic Completes Remarkable Return To No. 1 | ATP Tour | Tennis
Kaia Kanepi sends No. 1 Simona Halep home in stunner - Official Site of the 2023 US Open Tennis Championships - A USTA Event
What the ATP's year-end Top 30 would look like if there had been points at Wimbledon
ATP Rankings Movers: Roger Federer Returns To No. 1 | ATP Tour | Tennis
Alcaraz wins Indian Wells over Medvedev, regains No. 1 rank
U.S. Open 2018: No. 1-seed Simona Halep upset in 1st round by No. 44 Kaia Kanepi – The Denver Post
Gauff becomes ITF Juniors world No. 1
Roger Federer, Floundering in Heat and Humidity, Shows He's Only Human - The New York Times
2018 champion Kerber vs. No. 1 Barty in Wimbledon semifinals – Oneida Dispatch
U.S. Open 2018: No. 1-seed Simona Halep upset in 1st round by No. 44 Kaia Kanepi – The Denver Post
Throwback: When Roger Federer won the 2018 Rotterdam Open to become the oldest World No. 1
World no. 1 junior Chun Hsin Tseng eyes Grand Slams history - Official Site of the 2023 US Open Tennis Championships - A USTA Event
Novak Djokovic to lose men's world No. 1 rank to Daniil Medvedev | Sporting News
Winning the tournament and being No. 1 again' – Carlos Alcaraz reveals goal ahead of Indian Wells | Tennis Buzz | capjournal.com
Swiatek, Gauff lose at Australian Open; Korda in 1st Slam QF
Rafael Nadal and Roger Federer seeded 1-2 for Australian Open
Carlos Alcaraz Wins US Open, Becoming Youngest Man Ranked Tennis No. 1 - Bloomberg
At 36, Roger Federer Becomes Oldest No. 1 In Tennis
Roger Federer retiring from pro tennis at age 41: 'The tires finally wore out' - oregonlive.com
Norrie: Goal is World No. 1
Wozniacki overtakes Halep to return to WTA World No.1
2018 ATP World Tour - Wikipedia
Australian Open 2018: Rafael Nadal wins, Americans lose - Sports Illustrated
