On January 29, the ATP officially announced the latest edition of the world rankings. After the fierce battle at the Australian Open over the past two weeks, the world rankings have changed significantly this week. Sinner, who won the Australian Open, narrowed the gap between himself and the top three, Djokovic retained his world No. 1 ranking, and China's No. 1 Zhang Zhizhen entered the top 50 for the first time. 
The top 6 players in the world have not changed anything this week. Despite failing to defend his title at the Australian Open, Djokovic is still ranked No. 1 in the world with 9,855 points. Alcaraz missed the chance to challenge for world No. 1 at the Australian Open, finishing second with 600 points. Australian Open runner-up Dmitry Medvedev is in third place with 8,765 points, and Sinner has reached 8,310 points after winning the Australian Open, continuing to sit in fourth place. The 5th and 6th are Rublev and Zverev, respectively. 
Last year's Australian Open runner-up Tsitsipas slipped three places from No. 7 to No. 10 in the world this week, while Rune, Hurkacz and Fritz each moved up one place to No. 7 to No. 9 respectively. From 11th to 20th are De Minaur, Ruud, Dimitrov, Tiafoe, Paul, Shelton, Manarino, Khachanov, Norrie and Jarry. 
The biggest improvement in the top 100 this week was the Australian Open dark horse Cazo, who entered the round of 16 of the Australian Open as a wild card, and rose from 122nd to 83rd in the world this week, an increase of 39 places. Borges, another Australian Open last-16 player, moved up from 69th to 47th this week. 
In addition, the following players in the top 100 have improved significantly: Kezmanovic (+19), Marousanne (+10), Van Ascher (+11), Mikkelsen (+18), Koboli (+24), Kovacevic (+16), Brandon Nakashima (+30), Martinez (+10), Aris (+10). 
As for the Chinese players, Zhang Zhizhen moved up four places from No. 54 to No. 50 this week, setting a new career high. Zhang Zhizhen made history by becoming the first male player from Chinese mainland to make it to the top 50. There are three other Chinese players in the top 200, namely Wu Yixuan at No. 118, Shang Juncheng at No. 141 and Buyun Chaoket at No. 173.