WTA · Head-to-Head Rivalry
Meetings
12
Series
10–2
Serena Williams first
Last Meeting
Feb 8, 2021
Avg Game Margin
6.6
winner's games minus loser's
Serena Williams · 102 · Simona Halep
20112021
Record by Surface
Hard
8–0
Grass
1–1
Clay
1–0
Serena Williams in green, Simona Halep in blue.
Series shown from Serena Williams's perspective.
Every Serena Williams vs Simona Halep Meeting
| Date | Tournament | Surface | Winner | Score |
|---|---|---|---|---|
| Feb 8, 2021 | Australian OpenQuarterfinal | Hard | Serena Williams | 6-3 6-3 |
| Jul 1, 2019 | WimbledonFinal | Grass | Simona Halep | 6-2 6-2 |
| Jan 14, 2019 | Australian OpenR16 | Hard | Serena Williams | 6-1 4-6 6-4 |
| Aug 29, 2016 | US OpenQuarterfinal | Hard | Serena Williams | 6-2 4-6 6-3 |
| Mar 7, 2016 | Indian WellsQuarterfinal | Hard | Serena Williams | 6-4 6-3 |
| Aug 17, 2015 | CincinnatiFinal | Hard | Serena Williams | 6-3 7-6(5) |
| Mar 23, 2015 | MiamiSemifinal | Hard | Serena Williams | 6-2 4-6 7-5 |
| Oct 20, 2014 | WTA FinalsFinal | Hard | Serena Williams | 6-3 6-0 |
| Aug 12, 2013 | CincinnatiQuarterfinal | Hard | Serena Williams | 6-0 6-4 |
| May 13, 2013 | RomeSemifinal | Clay | Serena Williams | 6-3 6-0 |
| Jun 20, 2011 | WimbledonR64 | Grass | Serena Williams | 3-6 6-2 6-1 |
Tour-level meetings back to 1968 where available. Dates reflect the tournament start.
Rating & Ranking
| Serena Williams | Simona Halep | |
|---|---|---|
| #1194 | WTA Rank | — |
| 1639 | Overall Elo | 1723 |
| 1663 | Hard Elo | 1660 |
| 1586 | Clay Elo | 1620 |
| 1541 | Grass Elo | 1635 |
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
| Serena Williams | Simona Halep | |
|---|---|---|
| 0–1 | 2026 Season | — |
| 0%1 matches | Last 12 Months | —0 matches |
| 40% | Form (last 5) | 25% |
| — | Form (30 days) | — |
| Jun 30, 2026 | Last Match | Feb 3, 2025 |
Serve & Return
| Serena Williams | Simona Halep | |
|---|---|---|
| 61% | Hold % | 51% |
| 68% | Break % | 70% |
| 10.5% | Ace Rate | 3.0% |
| 5.7% | Double Fault Rate | 4.4% |
| 63% | Serve Pts Won | 58% |
| 43% | Return Pts Won | 48% |
Career rates over each player's tracked matches.
Advanced Stats
Advanced stats are for Pro members
Per-Match Averages
| Serena Williams | Simona Halep | |
|---|---|---|
| 7.6 | Avg Aces | 2.0 |
| 2.5 | Avg Aces Against | 1.8 |
| 4.2 | Avg Breaks | 4.6 |
| 19.7 | Avg Games | 20.6 |
| 471 | Matches | 666 |
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.