No. 4 (Joint-Career High) Dominic Thiem, +4
The 25-year-old claimed the biggest title of his career on Sunday by lifting his first ATP Masters 1000 trophy at the BNP Paribas Open in Indian Wells with a 3-6, 6-3, 7-5 victory over Roger Federer. The Austrian, who had previously finished runner-up in two ATP Masters 1000 finals at the Mutua Madrid Open in 2017 (l. to Nadal) and 2018 (l. to Zverev), first rose to No. 4 in the ATP Rankings on 6 November 2017, spending two weeks in the position. Read More & Watch Indian Wells Final Highlights

No. 45 Jan-Lennard Struff, +10
The 28-year-old advanced to the fourth round of an ATP Masters 1000 for the first time in beating John Millman, Ricardas Berankis and No. 3-ranked Alexander Zverev, before falling to Milos Raonic. In rising 10 spots, the German is now one place off his career-high of No. 44 (8 May 2017)

No. 54 (Career High) Hubert Hurkacz, +13
The 22-year-old continues his rise, moving from No. 88 in the ATP Rankings at the start of 2019 to his current position of No. 54. The Pole reached his first ATP Masters 1000 quarter-final (l. to Federer), which included his second Top 10 win — over No. 7 Kei Nishikori in the third round — and Denis Shapovalov in the fourth round. 

No. 64 Yoshihito Nishioka, +10
The Japanese moved up to six places off his career-high (No. 58 on 20 March 2017) after a thrilling run to the Indian Wells fourth round, which includes victories over Denis Kudla, Roberto Bautista Agut and in-form Felix Auger-Aliassime. 

No. 95 (Career High) Miomir Kecmanovic, +35
The 19-year-old Serbian qualified for his second ATP Masters 1000 tournament in Indian Wells, where he reached the quarter-finals (l. to Raonic). He rises 35 places to a career-high No. 95.

Other Notable Top 100 Movers This Week
No. 6 Kei Nishikori, +1
No. 12 Karen Khachanov, +1
No. 36 Marton Fucsovics, -5
No. 37 Stan Wawrinka, +3
No. 46 (Career High) Radu Albot, +7
No. 52 Matteo Berrettini, +5
No. 56 Taylor Fritz, -10
No. 68 Sam Querrey, -17
No. 71 Denis Kudla, -6
No. 74 (Career High) Hugo Dellien, +13
No. 79 Nicolas Jarry, +7
No. 80 Guido Andreozzi, +8
No. 82 Ricardas Berankis, +13
No. 84 (Career High) Prajnesh Gunneswaran, +13
No. 85 Pablo Cuevas, -12
No. 92 Hyeon Chung, -29