Those at the top of the rankings are preparing for 2018 - but there is plenty of movement further down the table as the year draws to a close.
Here are this week's most notable rankings movers:
Chanel Simmonds (+3, No.296 to No.293): The South African has been ending the year brilliantly in her home country, most recently going in as top seed at the Digicall Futures, beating Lou Adler 4-6, 7-6(3), 6-2 in the final.
— Tennis South Africa (@TennisSA) December 10, 2017
Ekaterine Gorgodze (+17, No.359 to No.342): The 26-year-old made it past two seeds to reach the semifinal of the V Circuito ITF Castellon Spain, but lost to eventual champion Isabelle Wallace in straight sets, 6-4, 6-3.
Estrella Cabeza Candela (+12, No.371 to No.359): The 30-year-old was another one who fell to Wallace - this time in the quarterfinal, going down 4-6, 6-2, 4-6.
Miriam Kolodziejova (+11, No.395 to No.384): The 20-year-old won the Jablonec Open as top seed, beating Switzerland's Susan Bandecchi in the final, 6-3, 6-4.
Sandra Samir (+23, No.411 to No.388): Top seed at the Al-Solaimaneyah F36 Women's Future, the Egyptian was knocked out in the semifinal, losing to Melanie Klaffner of Austria, 4-6, 5-7.
Olga Doroshina (+35, No.433 to No.398): The 23-year-old was seeded fifth at the Jam Shri Women's ITF $15k Tennis Tournament, and finished as runner-up to Bunyawi Thamchaiwat of Thailand, who won 7-6(2), 6-3 in the final.