Two-time Grand Slam champion Svetlana Kuznetsova is back in the Top 100 after her run to the quarterfinals of the Samsung Open.
This is her first time in the Top 100 since August 2018; since then she has been struggling with injury. Now, however, she looks to rise back up - towards her career high of World No.2.
Claro Open Colsanitas champion Amanda Anisimova is another big climber this week, moving up 22 places to a new career-high ranking of World No.54.
The 17-year-old American won her maiden title - in her first clay court tournament in two years - by rallying from a set and a break down.
Polona Hercog (+25, No.89 to No.64): The Samsung Open champion began her campaign in Lugano in style, beating second seed Carla Suárez Navarro 3-6, 6-3, 6-4. She is now at her highest ranking since July 2018.
Vitalia Diatchenko (+22, No.95 to No.73): The Russian makes inroads into the Top 100 after being seeded No.1 in Istanbul and cruising through the week to win the title without dropping a set. She is closing in on her career high of No.71.
Kristyna Pliskova (+14, No.101 to No.87): Defeated semifinalist in Lugano, the Czech will be well satisfied with reaching that stage of the competition for the first time in two years.
Iga Swiatek (+27, No.115 to No.88): The Pole beat two seeds en route to the Lugano final, beating Viktoria Kuzmova in the Round of 16 then Vera Lapko in the quarterfinal. It has boosted her into the Top 100 for the very first time.
Fiona Ferro (+16, No.108 to No.92): France's Ferro did not drop a set in Lugano until the semifinal, when she fell to eventual champion Hercog 7-5, 6-4. The 22-year-old soars into the Top 100 - and a new career-high ranking.
Astra Sharma (+36, No.138 to No.102): The Australian is incredibly close to breaking the Top 100 for the very first time. She secures a new career high after finishing the week as runner-up in Bogota.
Beatriz Haddad Maia (+41, No.165 to No.124): A battling week for the Brazilian sees her climb a massive 41 places in the rankings. She fought her way through two rounds of qualifying in Bogota - both of which extended to three sets - and ultimately reached the semifinal, where she lost to eventual champion Anisimova.