Though there were no major events on the WTA Tour last week, the women's rankings still saw a shakeup with ranking points from last year's Adelaide 500 event dropped as it was held 12 months ago.
Following her straight set win over Leylah Fernandez in US Open final, Raducanu has moved from World No. 150 to World No. 23 in WTA Rankings.
Teichmann had stunned world No.2 Naomi Osaka in the round of 16 for her biggest career win by ranking.
Jennifer Brady, the 25-year-old American who was the runner-up to Osaka, jumped 11 spots to No. 13, her first time inside the Top 20.
Osaka on Sunday defeated Victoria Azarenka 1-6, 6-3, 6-3 to win the third Grand Slam of her career and courtesy her victory; she has climbed six spots to move to the third position in the latest WTA rankings.
Novak Djokovic remained on top of the ATP rankings with 10,220 points and is followed by Rafael Nadal while Ash Barty has a got 8,717 points and is followed by Simona Halep in the WTA rankings.
Serena Williams won her first title since 2017 on Sunday after she won the ASB Classic in Auckland.
Bianca Andreescu's 6-3, 7-5 victory over Serena Williams in the US Open final on Saturday continued the 19-year-old Canadian's rapid rise from 178th at the end of last season.
Simona Halep achieved rank four with 5933 points in the table led by Australia's Ashleigh Barty with 6605 points.
Williams dropped as low as 491st upon her return to competition in March 2018 but is up to No. 10 after reaching two Grand Slam finals.
Petra Kvitova defeated Danielle Collins 7-6 (2), 6-0 while Naomi Osaka downed Karolina Pliskova 6-2, 4-6, 6-4 in the semi-finals to set up a summit clash against each other.
WTA has also decided to guarantee players that they will not have to face a seeded player in a tournament's opening round.
Apart from Halep, only four women have been named Fan Favourite in the ten-year history of the award.
Caroline Wozniacki of Denmark retained the third sport in this week's unchanged top 10, ahead of Ukraine's Elina Svitolina and Japan's Naomi Osaka.
The 27-year-old Halep had her best year on tour in 2018, reaching the Australian Open final and then winning her first Grand Slam title a few months later at Roland Garros.
Halep lost the first set 6-1 to Tunisia's Ons Jabeur before retiring with a back injury that she also had problems with at last week's Wuhan Open.
Serbia's Novak Djokovic jumped three spots to third after he captured his third US Open title and 14th overall grand slam.
The top in both the WTA and ATP rankings remain unchanged with all the players holding on to their spots.
The 20-year-old Delhi girl, backed by Mahesh Bhupathi, has been in good form in the past few weeks.
Germany's Angelique Kerber kept world No.4, after having claimed the spot a week earlier thanks to her first-ever Wimbledon title victory.
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