- Williams' 57th WTA title was also her 11th this year, the most in a season since Martina Hingis won 12 WTA titles in 1997.
- The 32-year-old Williams broke her own record as oldest WTA Championships winner.
- Williams was the first player to defend a WTA Championships title since Justine Henin in 2007.
- Williams' 78 match wins this year was the WTA's most since Kim Clijsters won 90 matches in 2003.
- Williams' 78-4 record in 2013 gave her a .951 winning percentage, the ninth-best in the Open Era (fewer than 10 losses, minimum 50 matches won).
1. Martina Navratilova: .989 (1983)
2. Steffi Graf: .977 (1989)
3. Martina Navratilova: .975 (1984)
4. Steffi Graf: .974 (1987)
5. Martina Navratilova: .968 (1982)
6. Martina Navratilova: .967 (1986)
7. Steffi Graf: .960 (1988)
8. Margaret Court: .953 (1973)
9. Serena Williams: .951 (2013)
- Williams also moved into a tie for 10th place for most professional match wins in the Open Era:
1. Martina Navratilova: 1,442 wins
2. Chris Evert: 1,309 wins
3. Steffi Graf: 902 wins
4. Virginia Wade: 839 wins
5. Arantxa Sánchez-Vicario: 759 wins
6. Lindsay Davenport: 753 wins
7. Conchita Martínez: 739 wins
8t. Evonne Goolagong Cawley: 695 wins
8t. Billie Jean King: 695 wins
10. Venus Williams: 638 wins
11t. Gabriela Sabatini: 632 wins
11t. Serena Williams: 632 wins
Hsieh & Peng Make History
Hsieh Su-Wei and Peng Shuai had a memorable WTA Championships debut, as their defeat of Ekaterina Makarova and Elena Vesnina made them the first Asian duo to capture the season finale.
In the process, Hsieh and Peng improved to 9-0 in WTA finals and 5-0 this year. Also, their five WTA titles in 2013 is the most by a duo this season.
- Istanbul runner-up Li Na climbed two spots spot to a career-high No.3, breaking the record of No.4 as the highest-ranked Asian in WTA history that she previously shared with Kimiko Date-Krumm.
- Istanbul doubles champs Hsieh Su-Wei and Peng Shuai each went up one spot to career-highs on the doubles rankings, Hsieh to No.3 and Peng to No.4.