History was made at the US Open on Sunday, when Carlos Alcaraz defeated Casper Ruud to earn his first Grand Slam title and secure the No. 1 Pepperstone ATP Ranking. Beaten finalist Ruud has also made a big jump following the run to his second major final, while Frances Tiafoe has cracked the Top 20 after reaching the semi-finals.
ATPTour.com looks at the movers of the week, as of Monday, 12 September.
No. 1 Carlos Alcaraz, +3 (Career High)
The 19-year-old has made history following his title run at the US Open, becoming the youngest World No. 1 in the history of the Pepperstone ATP Rankings. Alcaraz, who saved one match point against Jannik Sinner en route to his maiden major title, is the fourth Spanish man to climb to the top of the sport, while he is the youngest Grand Slam champion since Rafael Nadal, 19, triumphed at Roland Garros in 2005. With the pressure on, Alcaraz overcame Ruud in four hard-fought sets on Arthur Ashe Stadium to earn his sixth tour-level title. Read US Open Final Report.
No. 2 Casper Ruud, +5 (Career High)
The Norwegian has soared five spots to No. 2 after he reached his second Grand Slam championship match at the US Open. The 23-year-old, who had never been beyond the third round in four previous appearances in New York, rallied past seeds Tommy Paul, Matteo Berrettini and Karen Khachanov in a standout run. The nine-time tour-level titlist now holds a 44-16 record on the season.
No. 18 Karen Khachanov, +13
The 26-year-old has jumped 13 spots after he reached his first Grand Slam semi-final at Flushing Meadows. Khachanov arrived in New York off the back of a first-round exit in Cincinnati, but quickly found his range on the US Open hard courts, earning impressive wins against Montreal champion Pablo Carreno Busta and Washington titlist Nick Kyrgios.
No. 19 Frances Tiafoe, +7 (Career High)
The American has soared to career-high No. 19 in the Pepperstone ATP Rankings following his dream run to the semi-finals on home soil in New York. The 24-year-old played lights-out tennis to advance to his first major semi-final, defeating Rafael Nadal en route. Alcaraz eventually stopped Tiafoe in a five-set thriller under the lights on Arthur Ashe stadium.
Living The Dream: How Carlos Alcaraz Hit No. 1 At 19
Other Notable Top 100 Movers
No. 8 Cameron Norrie, +1 (Career High)
No. 9 Andrey Rublev, +2
No. 11 Jannik Sinner, +2
No. 20 Nick Kyrgios, +5
No. 26 Borna Coric, +3
No. 28 Alejandro Davidovich Fokina, +11
No. 29 Tommy Paul, +5 (Career High)
No. 43 Andy Murray, +8
No. 46 Jack Draper, +7 (Career High)
No. 61 Ilya Ivashka, +12
No. 70 James Duckworth, +13
No. 72 J.J. Wolf, +15 (Career High)
No. 75 Daniel Elahi Galan, +19 (Career High)
No. 84 Corentin Moutet, +28
No. 95 Hugo Grenier, +24 (Career High)