BetBugs
Back to matches

Peyton Stearns - Lois Boisson

MadridFinished

Peyton Stearns

#43

Lois Boisson

#46

Tuesday, April 21, 2026 at 17:41

Quick Take

Stearns is the rightful favorite but overpriced at 1.38 (72.5% vs. 62% model); **best edge is Under 21.5 total games** (52% model probability vs. 55.6% implied), where Boisson's 7-month injury layoff and Madrid's high-altitude clay conditions increase probability of shortened, de...

Match WinnerPeyton Stearns62%-1.0pp
Total SetsUnder 2.5 (match in 2 sets)60%-0.7pp
Set BettingStearns 2-040%-1.0pp

Context Signals

Boisson hasn't competed since retiring mid-match vs Navarro on Sept 29, 2025. Withdrew from 2026 AO citing ongoing injuries and prioritizing long-term health. This is her first match back in ~7 months.

  • •Last competitive match: Sept 29, 2025 — retired at 6-2, 1-0 vs Navarro, suggesting physical breakdown mid-match
  • •Withdrew from 2026 Australian Open, confirmed she hadn't played since late September while managing injuries
  • •Zero matches in 2026 vs Stearns' 12 competitive matches across January–April 2026
  • •Returning at a WTA 1000 (deep draw, high-intensity field) raises the stakes on match readiness

Boisson's career clay record is elite (110-39, 73.8%) including 26-7 in 2025. Stearns is just 1-1 on clay in 2026 and 58-37 career (61%). This gap narrows the rust disadvantage on this surface.

  • •Boisson 2025 clay record: 26-7 (78.8%) with deep Roland-Garros run before injury shutdown
  • •Boisson career clay: 110-39 (73.8%) vs Stearns career clay: 58-37 (61%)
  • •Stearns only 1-1 on clay in 2026; most recent form built on hard courts (11-8 hard in 2026)
  • •Boisson's entire 2024 season was nearly exclusively clay (23-2 record)

Caja Magica sits at ~700m altitude, making balls travel faster than standard clay. This partially neutralizes Boisson's clay-grinding advantage and benefits Stearns' hard-court-honed power game.

  • •Madrid at 700m altitude produces faster conditions than typical clay events like Rome or Roland-Garros
  • •Stearns' stronger hard-court pedigree (11-8 hard 2026) means she's more adapted to pace-based tennis
  • •Boisson's 6.3% double fault rate could spike in faster conditions with less margin on second serve
  • •Higher altitude favors servers and flatter ball-strikers over heavy topspin grinders

Market implies 72.5% win probability for Stearns, but model estimates 62%. Boisson's clay floor (73.8% career rate) means even rusty she's not a 28% underdog. Better value may sit in game/set totals than match winner.

  • •Stearns match winner at 1.38 implies 72.5% probability vs model's 62% — a 10.5-point gap
  • •Boisson's clay talent provides a competitive floor even after layoff; career 73.8% clay win rate
  • •Boisson's first-set conversion rate (89% career) rivals Stearns (86%), limiting blowout risk
  • •Under 21.5 total games (1.80) offers tighter model alignment at 52% vs 55.6% implied

Betting Edges

Model probabilities

Markets to Avoid

Match Winner Peyton Stearns 1.38:Market odds (72.5% implied) overestimate Stearns' edge relative to model (62%); insufficient value at this line despite real competitive advantage. The 7-month injury absence to Boisson creates uncertainty that the 1.38 line doesn't adequately reflect.
Game Handicap Stearns -2.5 @ 1.55, Boisson +2.5 @ 2.30:Handcap lines are highly contingent on set structure and break points. Without clarity on Boisson's court-movement and recovery capacity post-injury, the lines lack sufficient definition relative to the underlying uncertainty.
Set 1 Winner Any selection:Set 1 is inherently noisy (first-set-win conversion is 86% for Stearns, 89% for Boisson career-wide), and Boisson's rust could manifest unpredictably. Insufficient analytical edge vs. odds.
Peyton Stearns enters Madrid as a slight favorite, and justifiably so—she's ranked #43 with active match fitness (12 matches in 2026) against Lois Boisson (#46), who hasn't competed since late September 2025 due to injury management. That seven-month layoff is the decisive variable. Stearns has won 60% of her recent matches and carries the sharp edge in match readiness, especially critical on clay where footwork and rhythm compound the rust factor. However, the market's 1.38 line on Stearns (72.5% implied probability) overstates her advantage relative to model projections (62%).

Recent Form

Peyton Stearns

7W 3L
L6-0 3-6 6-4#48 Mccartney KesslerApr 2, 2026
W7-6(8) 7-5#108 Ashlyn KruegerApr 1, 2026
L6-4 7-5#33 Jaqueline CristianMar 20, 2026
W7-6(6) 6-4#81 Viktorija GolubicMar 19, 2026
L7-5 7-5#88 Solana SierraMar 5, 2026
W7-6(8) 7-5#90 Taylor TownsendMar 1, 2026
W6-3 3-6 6-2#82 Kimberly BirrellFeb 28, 2026
W6-1 5-7 7-5#77 Oksana SelekhmetevaFeb 27, 2026
W6-0 6-2#105 Kaja JuvanFeb 26, 2026
W3-6 6-3 6-2#102 Francesca JonesFeb 24, 2026

Lois Boisson

6W 4L
L6-2 1-0 ret.#28 Emma NavarroSep 29, 2025
W6-3 6-4#20 Liudmila SamsonovaSep 27, 2025
W7-6(6) 5-7 6-2#117 Dalma GalfiSep 25, 2025
L4-6 6-2 6-2#14 Ekaterina AlexandrovaSep 18, 2025
W6-2 6-1#205 Yeon Woo KuSep 15, 2025
L3-6 7-6(3) 6-2#81 Viktorija GolubicAug 26, 2025
L6-4 1-6 6-4#191 Jil TeichmannAug 18, 2025
W7-5 6-3#63 Anna BondarJul 20, 2025
W6-1 7-6(5)#49 Dayana YastremskaJul 19, 2025
W6-3 6-3#156 Viktoriya TomovaJul 18, 2025
Data Coverage (dev)

Data Coverage

Complete
StatsAvailable

Apr 20, 15:43

IntelAvailable

Apr 20, 15:45

OddsAvailable

Apr 21, 18:33

Injuries/News (from Intel)Available

Apr 20, 15:45

Analysis updated: Apr 20, 15:51