Every week, wtatennis.com will be serving up a summary of stats in WTA Odds N' Ends.
WTA Staff

Breakthroughs, ranking movers and much more - every week wtatennis.com will be serving up a summary of stats in WTA Odds N' Ends...

Serena Soars At Season Finale
Serena Williams finished a terrific season in spectacular fashion, cruising to the TEB BNP Paribas WTA Championships - Istanbul 2012 title. In so doing, she accomplished a plethora of noteworthy statistics.

- She became the first player since the WTA Championships changed to a round robin format in 2003 to capture the title without losing a set all tournament.
- It was the 46th WTA title of her career, two ahead of sister Venus for most amongst active players. She has the 10th-most of the Open Era.
- It was her WTA-leading seventh WTA title of 2012, one short of the eight she won in 2002 - the most she has ever won in a season.
- At 31, she became the oldest player to win the event in its 41-year history.
- She has now won 18 matches in a row against Top 5 players, 12 in a row against Top 2 players and six in a row against No.1s. Her 16 career wins over World No.1s is the second-most all-time behind Martina Navratilova's 18.
- She will finish the year with a 58-4 record and a .935 winning percentage. Since 1990, only one player has posted a better winning percentage - Justine Henin, who went 63-4 in 2007 for a .940 winning percentage.
- Having also been victorious in 2001 and 2009, she is now the sixth player to win the WTA Championships at least three times:
1. Martina Navratilova: 8
2. Steffi Graf: 5
3. Chris Evert: 4
4t. Monica Seles: 3
4t. Kim Clijsters: 3
4t. Serena Williams:

Russians Victorious In Doubles
Maria Kirilenko and Nadia Petrova were the last team to qualify for the TEB BNP Paribas WTA Championships - Istanbul 2012, and made the most of their opportunity. They got past No.1 seeds Sara Errani and Roberta Vinci in a match tie-break in Saturday's semifinals and beat No.2 seeds Andrea Hlavackova and Lucie Hradecka in straight sets in Sunday's final. Though they only secured two WTA titles this season, they were both big ones, as they also were victorious at Miami.

Kirilenko and Petrova now have four WTA titles as a duo. Kirilenko has 12 WTA doubles titles to her name and Petrova has 21, two of those coming at the season finale, as she also captured the WTA Championships in 2004 alongside Meghann Shaughnessy.

Ranking Risers
- After winning one match during her WTA Championships debut, Sara Errani climbed a spot to a career-high No.6 - two spots shy of former World No.4 Francesca Schiavone for the best ranking achieved by an Italian.
- Annika Beck jumped 26 spots to No.86 and made her Top 100 debut. In so doing, the 18-year-old became the youngest player in the Top 100, as she is 26 days younger than No.53 Laura Robson.
- WTA Championships doubles winner Nadia Petrova ascended three spots on the doubles rankings to return to the Top 5 for the first time since April 2005.