Dayeon Back vs Sandra SamirPrediction, Head-to-Head Results, and Stats
Dayeon Back and Sandra Samir have met 1 time since 2026; Dayeon Back leads 1–0. Across all meetings Back has taken 2 sets to Samir's 0. Their most recent meeting: Dayeon Back won at W50 Darmstadt (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Back | Samir | ||
|---|---|---|---|---|
| Indicator | Dayeon Back | Sandra Samir | ||
| Wins in straight sets | 85% | 44/52 | 67% | 40/60 |
| Wins a set when losing | 26% | 6/23 | 38% | 12/32 |
| Goes to a deciding set | 19% | 14/75 | 35% | 32/92 |
| Covers −1.5 sets as favorite | 66% | 35/53 | 49% | 33/68 |
| Covers +1.5 sets as underdog | 25% | 3/12 | 62% | 13/21 |
| Tiebreak sets won | 46% | 6/13 | 55% | 11/20 |
| Wins after taking set 1 | 94% | 47/50 | 92% | 49/53 |
| Wins 2-0 after taking set 1 | 88% | 44/50 | 75% | 40/53 |
Colored rows are higher-is-better: green above 50%, red below. Favorite/underdog set by book odds; cover rows count only matches with odds on record. Head-to-head: 1 of 1 completed meetings ended in straight sets (Back 1, Samir 0).
Style Matchup
Playing styles and historical archetype record
Back
👑 The Complete Package
Samir
🪃 Counterpuncher
Matchup analysis
The 👑 The Complete Package archetype wins about 56% vs 🪃 Counterpuncher across 6,005 matches in our dataset: a stylistic lean toward Dayeon Back.
The Complete Package players often use elite serve & return and high bp conversion to pressure the counterpuncher's elite bp conversion.
Previous meetings
1 career meeting, newest first
Jul 15, 2026
W50 Darmstadt
C Clay · 1st Round
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Back | Samir | ||
|---|---|---|---|---|
| Outcome | Dayeon Back | Sandra Samir | ||
| 1 or more | 39% | 7/18 | 40% | 4/10 |
| 3 or more | 6% | 1/18 | 0% | 0/10 |
| 5 or more | 0% | 0/18 | 0% | 0/10 |
| 10 or more | 0% | 0/18 | 0% | 0/10 |
| 15 or more | 0% | 0/18 | 0% | 0/10 |
| 20 or more | 0% | 0/18 | 0% | 0/10 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Back | Samir |
|---|---|---|
| W-L | 12–5 | 3–7 |
| Avg odds | 1.41 | 2.96 |
| ROI % | -13.2% | -36.7% |
| Units P/L | -2.24u | -3.67u |
Travel
Last 30 days
| Metric | Back | Samir |
|---|---|---|
| Countries | 2 | 2 |
| Events | 2 | 2 |
| Matches | 3 | 2 |
| Distance | — | — |
| Route | USA → POR | SVK → TUN |
Host country from the tournament each match was played in, over the last 30 days. Route is the order of countries visited; consecutive stops in the same country are shown once. Distance is the great-circle total between host cities, shown only when every stop in the window is geocoded. A rough fatigue signal, not a headline stat.
Common opponents
Results vs. opponents both players faced · Last 12 months
Back has a higher win rate against shared opponents (75% vs Samir's 50%).
| Opponent | Back | Samir |
|---|---|---|
| Lea Nilsson | L 67 26 | W 61 76 |
| Jia Jing Lu | W 62 62 | L 06 36 |
| Khongorzul Aldarkhishig | W 60 60 | W 16 63 64 |
| Meng Yi Chen | W 62 60 | L 61 16 46 |
Recent Form
Last five matches per player
Laima Vladson
W50 Hamburg · 2nd Round
Aug 13
Arina Gabriela Vasilescu
W50 Hamburg · 1st Round
Aug 12
Julie Pastikova
W75 Leipzig · 1st Round
Aug 5
Xinxin Yao
W75 Hechingen · 1st Round
Jul 29
Lea Nilsson
W50 Horb · Final
Jul 26
Loes Ebeling Koning
W50 Horb · Quarterfinals
Jul 24
Madelief Hageman
W50 Horb · 2nd Round
Jul 23
Oana Georgeta Simion
W50 Horb · 1st Round
Jul 22
Polina Leykina
W35 Krakow · 1st Round
Aug 18
Yelyzaveta Kotliar
W35 Bydgoszcz · 1st Round
Aug 12
Jule Niemeier
W50 Knokke-Heist · 1st Round
Jul 29
Dayeon Back
W50 Darmstadt · 1st Round
Jul 15
Francesca Gandolfi
W35 Buzau · 1st Round
Jul 7
Carmen Andreea Herea
W35 Amstelveen · Quarterfinals
Jul 3
Linea Bajraliu
W35 Amstelveen · 3rd Round
Jul 2
Daniela Vismane
W35 Amstelveen · 2nd Round
Jul 1
Win rate
Matches, sets and games won · Last 12 months · 75–92 matches
| Metric | Back | Samir |
|---|---|---|
| Matches won | 69% | 65% |
| Sets won | 67% | 61% |
| Games won | 57% | 55% |
Record by tier
Head-to-head record by tournament tier
| Stage | Back | Samir |
|---|---|---|
| ITF W50 | 1 | 0 |
By surface
Head-to-head record per surface
| Surface | Back | Samir |
|---|---|---|
| Clay | 1 | 0 |
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