WTA · Head-to-Head Rivalry
Meetings
11
Series
1–10
Caroline Wozniacki first
Last Meeting
Oct 20, 2014
Avg Game Margin
3.8
winner's games minus loser's
Caroline Wozniacki · 110 · Serena Williams
20092014
Record by Surface
Hard
1–8
Grass
0–1
Clay
0–1
Caroline Wozniacki in green, Serena Williams in blue.
Series shown from Caroline Wozniacki's perspective.
Every Caroline Wozniacki vs Serena Williams Meeting
| Date | Tournament | Surface | Winner | Score |
|---|---|---|---|---|
| Oct 20, 2014 | WTA FinalsSemifinal | Hard | Serena Williams | 2-6 6-3 7-6(6) |
| Aug 25, 2014 | US OpenFinal | Hard | Serena Williams | 6-3 6-3 |
| Aug 11, 2014 | CincinnatiSemifinal | Hard | Serena Williams | 2-6 6-2 6-4 |
| Aug 4, 2014 | MontrealQuarterfinal | Hard | Serena Williams | 4-6 7-5 7-5 |
| Sep 30, 2013 | BeijingQuarterfinal | Hard | Serena Williams | 6-1 6-4 |
| Jul 30, 2012 | OlympicsQuarterfinal | Grass | Serena Williams | 6-0 6-3 |
| May 7, 2012 | MadridR16 | Clay | Serena Williams | 1-6 6-3 6-2 |
| Mar 19, 2012 | MiamiQuarterfinal | Hard | Caroline Wozniacki | 6-4 6-4 |
| Aug 29, 2011 | US OpenSemifinal | Hard | Serena Williams | 6-2 6-4 |
| Oct 26, 2009 | WTA Tour ChampionshipsSemifinal | Hard | Serena Williams | 6-4 0-1 RET |
| Jan 12, 2009 | SydneyQuarterfinal | Hard | Serena Williams | 6-7(5) 6-3 7-6(3) |
Tour-level meetings back to 1968 where available. Dates reflect the tournament start.
Rating & Ranking
| Caroline Wozniacki | Serena Williams | |
|---|---|---|
| — | WTA Rank | #1194 |
| 1733 | Overall Elo | 1639 |
| 1687 | Hard Elo | 1663 |
| 1554 | Clay Elo | 1586 |
| 1578 | Grass Elo | 1541 |
breakPoint Elo starts every player at 1500 and weights matches by tournament importance — values are internally consistent but not comparable to other published Elo scales.
Form & Activity
| Caroline Wozniacki | Serena Williams | |
|---|---|---|
| — | 2026 Season | 0–1 |
| —0 matches | Last 12 Months | 0%1 matches |
| 75% | Form (last 5) | 40% |
| — | Form (30 days) | — |
| Aug 26, 2024 | Last Match | Jun 30, 2026 |
Serve & Return
| Caroline Wozniacki | Serena Williams | |
|---|---|---|
| 40% | Hold % | 61% |
| 89% | Break % | 68% |
| 3.1% | Ace Rate | 10.5% |
| 3.0% | Double Fault Rate | 5.7% |
| 59% | Serve Pts Won | 63% |
| 47% | Return Pts Won | 43% |
Career rates over each player's tracked matches.
Advanced Stats
Advanced stats are for Pro members
Per-Match Averages
| Caroline Wozniacki | Serena Williams | |
|---|---|---|
| 2.1 | Avg Aces | 7.6 |
| 2.3 | Avg Aces Against | 2.5 |
| 4.3 | Avg Breaks | 4.2 |
| 20.7 | Avg Games | 19.7 |
| 695 | Matches | 471 |
Career averages per best-of-3 match; aces against are opponent aces conceded, breaks are service breaks won. Each stat covers the matches where it was tracked.