ATP Tour
William Jansen
Back after 5w off#1124
ATP World Ranking - 13 pts
Player Archetype
💥 Big Hitter
Overpowers opponents with raw shot speed and aggressive ball-striking. Generates winners from both wings and keeps points short with high-risk, high-reward tennis.
Power groundstrokesHigh winner countAggressive shotsShort rallies
Strong against
🏃 Pusher71%
🛡️ The Spoiler58%
Weak against
🎾 All-Court49%
🤖 Servebot50%
Player Overview
Age
21
Height
6'2" (188 cm)
Weight
87 kg (192 lbs)
Plays
Left-Handed, Two-Handed BH
Career-High Ranking
#1023 (2022-12-19)
Career
12
Wins
15
Losses
44.4%
Win %
0
Titles
Win / Loss by Year
Career record broken down by surface
| Year | Summary | Clay | Hard | Grass |
|---|---|---|---|---|
| 2026 | 7/7 | - | 5/4 | 2/3 |
| 2025 | 5/4 | - | 1/2 | 0/1 |
| 2024 | 0/2 | - | 0/1 | 0/1 |
| 2023 | 0/1 | - | 0/1 | - |
| 2022 | 0/1 | - | - | 0/1 |
| 2021 | 0/1 | - | - | 0/1 |
| Career | 12/16 | - | 6/8 | 2/7 |
Serve & Return
Averages · Last 90 days (13 matches)
Serve
1st Serve In78.3%
1st Serve Pts Won69.9%
2nd Serve Pts Won43.5%
Break Points Saved75%
Aces / Match6.5
Double Faults / Match2.6
Avg 1st Serve117 mph
Max Serve Speed136 mph
Return
1st Return Pts Won18.9%
2nd Return Pts Won46.7%
Break Points Converted60%
Rally
Winners / Match23.0
Unforced Errors / Match23.0
Net Pts Won %54.2%
Total Pts Won %48.7%
Prop Research
Career hit rates on common betting markets · 25 serve-stat matches
William Jansen has served 3+ aces in 96% of career matches and 5+ aces in 76%.
Ace Totals
| Outcome | Hit rate | Matches |
|---|---|---|
| 1 or more | 100% | 25/25 |
| 3 or more | 96% | 24/25 |
| 5 or more | 76% | 19/25 |
| 10 or more | 16% | 4/25 |
| 15 or more | 8% | 2/25 |
| 20 or more | 0% | 0/25 |
Double Fault Totals
| Outcome | Hit rate | Matches |
|---|---|---|
| 1 or more | 72% | 18/25 |
| 2 or more | 48% | 12/25 |
| 3 or more | 32% | 8/25 |
| 5 or more | 12% | 3/25 |
| 8 or more | 4% | 1/25 |
| 10 or more | 4% | 1/25 |
Total Sets
| Outcome | Hit rate | Matches |
|---|---|---|
| 2 Sets | 69% | 18/26 |
| 3 Sets | 31% | 8/26 |
Set Betting
| Outcome | Hit rate | Matches |
|---|---|---|
| 2-0 | 31% | 8/26 |
| 2-1 | 8% | 2/26 |
| 1-2 | 23% | 6/26 |
| 0-2 | 39% | 10/26 |
Match/Set Winner
| Outcome | Hit rate | Matches |
|---|---|---|
| 1st Set Winner | 39% | 11/28 |
| 2nd Set Winner | 61% | 17/28 |
| 3rd Set Winner | 33% | 3/9 |
Recent Matches
Last 10 results
FormLWLWW
| Date | Tournament | Round | Opponent | Surface | Score | Result |
|---|---|---|---|---|---|---|
| Jul 30, 2026 | M25 Aldershot | 2nd Round | Billy Blaydes | Hard | 36 75 46 | L |
| Jul 29, 2026 | M25 Aldershot | 1st Round | Louis Bowden | Hard | 63 64 | W |
| Jul 25, 2026 | M25 Champaign | Semifinals | Naoya Honda | Hard | 67 67 | L |
| Jul 24, 2026 | M25 Champaign | Quarterfinals | Karim Bennani | Hard | 36 75 63 | W |
| Jul 23, 2026 | M25 Champaign | 2nd Round | Ilyas Milad Fahim | Hard | 36 75 60 | W |
| Jul 22, 2026 | M25 Champaign | 1st Round | Keaton Hance | Hard | 62 62 | W |
| Jul 16, 2026 | M25 Louisville | 2nd Round | Alexander Frusina | Hard | 67 46 | L |
| Jul 15, 2026 | M25 Louisville | 1st Round | Joshua Peck | Hard | 64 63 | W |
| Jul 7, 2026 | Nottingham 3 Challenger | 1st Round | Felix Gill | Grass | 46 76 46 | L |
| Jul 6, 2026 | Nottingham 3 challenger | Theo Papamalamis | Grass | 67 64 64 | W |
William Jansen FAQ
William Jansen is ranked #1124 on the ATP tour with 13 ranking points. The career-high ranking is #1023, reached in 2022.
William Jansen is from Great Britain.
William Jansen is listed at 6'2" (188 cm). Listed weight is 87 kg (192 lb).
William Jansen is 21 years old.
William Jansen plays left-handed with a two-handed backhand.
William Jansen has a career win-loss record of 12-15 (44% win rate).
William Jansen: a career-high ranking of #1023 in 2022 and 12 career wins.
William Jansen's strongest surface by win rate is hard, with a 6-8 record (43%). Full career splits: hard 6-8 (43%) and grass 2-7 (22%).
William Jansen has won 6 of the last 10 completed matches (60%).