Who Is Tennis No. 1 in 2025? Current ATP & WTA Rankings

By Sarah Miller · March 25, 2034

As of October 2025, the ATP No. 1 singles player in men's tennis is Jannik Sinner from Italy, while Iga łąska from Poland holds the WTA No. 1 ranking in women's tennis.

Who Is Currently Ranked No. 1 in Tennis?

In professional tennis, the world No. 1 ranking is awarded by two governing bodies: the Association of Tennis Professionals (ATP) for men and the Women's Tennis Association (WTA) for women. As of October 2025, Jannik Sinner leads the ATP rankings, marking his second stint at the top after first achieving it in early 2025. On the women's side, Iga łąska has reclaimed the No. 1 position on the WTA tour, showcasing consistent dominance across multiple seasons.

This dual-gender structure means there are always two official world No. 1 players in tennis. Rankings are updated weekly based on players' performances over a rolling 52-week period, including Grand Slam tournaments, ATP/WTA Masters events, and other sanctioned competitions.

How Tennis Rankings Work

The ATP and WTA use a points-based system where players earn points based on tournament results. The number of points depends on the tournament category and how far a player advances.

Key Factors in Ranking Points

Tournament Level: Grand Slams award the most points (2000 for winners), followed by ATP/WTA Finals, Masters 1000/1000, 500-series, and 250-series events.
Performance: Points increase with each round won, peaking at the championship match.
Defending Points: Players must defend points earned the previous year; failing to match past performance results in point deductions.
Best Results: Only a player's best 18 tournament results (for ATP/WTA) within the past 52 weeks count toward their total.

Jannik Sinner: ATP World No. 1

Jannik Sinner rose to prominence with a powerful baseline game and mental resilience. His ascent to No. 1 in early 2025 was fueled by winning three ATP Masters 1000 titles and reaching the semifinals of the Australian Open and French Open. After briefly losing the top spot to Carlos Alcaraz, Sinner regained it following a dominant summer hardcourt season, culminating in a US Open victory.

Sinner is known for his aggressive forehand, exceptional backhand down the line, and improved net play. At 24 years old, he represents a new generation of physically strong, tactically intelligent players.

Iga łąska: WTA World No. 1

Iga łąska has been a fixture at the top of women's tennis since first claiming the No. 1 ranking in 2020. Her ability to combine elite footwork, heavy topspin groundstrokes, and unmatched court coverage makes her one of the most challenging opponents in the sport.

In 2025, łąska reclaimed the top spot after winning Roland Garros and maintaining consistency throughout the clay and grass seasons. With multiple WTA 1000 titles and deep runs at every major, she continues to accumulate points that keep her ahead of rivals like Aryna Sabalenka and Coco Gauff.

Current Top 10 ATP & WTA Rankings (October 2025)

Rank	ATP Player	Points	WTA Player	Points
1	Jannik Sinner	9850	Iga łąska	9120
2	Carlos Alcaraz	9200	Aryna Sabalenka	8750
3	Daniil Medvedev	7600	Coco Gauff	7400
4	Alexander Zverev	7100	Elena Rybakina	6980
5	Andrey Rublev	6500	Aryna Sabalenka	6700
6	Stefanos Tsitsipas	6300	Barbora Krejčíčová	6100
7	Casper Ruud	5900	Jeļena Ostapenko	5800
8	Taylor Fritz	5600	Ons Jabeur	5500
9	Hubert Hurkacz	5200	Pegula	5100
10	Denis Shapovalov	5000	Zhang Shuai	4900

Table data source:ATP Official Site, WTA Official Site

The table shows a tight race in both tours, with Sinner leading the ATP by 650 points over Alcaraz. In the WTA, łąska maintains a narrow 370-point lead over Sabalenka. The depth in the top 10 indicates high competition levels, especially among younger players pushing for more consistent results.

Historical Context of the No. 1 Ranking

Holding the No. 1 ranking is a significant achievement in tennis. Players like Novak Djokovic, Serena Williams, Roger Federer, and Steffi Graf have spent extended periods at the top, setting records for weeks at No. 1.

Djokovic holds the all-time record for most weeks at No. 1 in men's tennis (over 400 weeks), while łąska has already accumulated over 120 weeks at No. 1 by 2025, placing her among the most dominant players of the 21st century.

Frequently Asked Questions About Tennis No. 1 Rankings

Who is the current world No. 1 in men's tennis as of October 2025?

Jannik Sinner is the current ATP world No. 1 in men's tennis as of October 2025, having reclaimed the top spot after winning the US Open and maintaining consistent results throughout the year.

Who holds the No. 1 ranking in women's tennis in 2025?

Iga łąska is the WTA world No. 1 in women's tennis in October 2025, returning to the top after winning Roland Garros and performing strongly in WTA 1000 events.

How often are tennis rankings updated?

ATP and WTA rankings are updated every Monday, reflecting results from tournaments completed the previous week. Point drops and additions are calculated based on the prior year's performance at the same event.

Can a player be No. 1 without winning a Grand Slam?

Yes, a player can be ranked No. 1 without winning a Grand Slam. While Grand Slam titles contribute significantly to rankings, consistent deep runs in Masters and other high-tier events can accumulate enough points to reach No. 1.

What happens to a player's ranking if they get injured?

If a player is injured and unable to compete, they may use a 'Special Ranking' (protected ranking) to enter tournaments after recovery. However, their official ranking will decline as they fail to defend points from previous tournaments.

Has any player been No. 1 in both singles and doubles simultaneously?

Yes, several players have achieved the feat of being world No. 1 in both singles and doubles, including Martina Navratilova, Serena Williams, and Novak Djokovic. This rare accomplishment highlights exceptional versatility across disciplines.