E. Arango vs L. Boisson — Prediction & Analysis

TennisEdge's AI model finds no betting value in E. Arango vs L. Boisson (Toronto on 2026-08-01) — the market is efficient, with L. Boisson favoured at 1.73.

Model probabilities

Independent estimates of who wins, each from a different method. The blend is what the bot prices against the market.

We publish how well these score against the closing market, including where they lose: how accurate are tennis predictions?

Elo ratings

Our own ratings, computed from match results since 2018. Players with fewer than 5 rated matches are omitted rather than shown at a provisional starting value. Last updated July 14, 2026.

Head to head

L. Boisson leads 1–0 over 1 meeting. Full record.

Recent form

All Aug. 1, 2026 results & picks →

Full analysis

WTA Toronto - FINAL (hard) | E. Arango (A, rank 85, age 25) vs L. Boisson (B, rank 43, age 23)

MODELS vs MARKET
  ELO: Arango 59.1 pct (favours the lower-ranked player)
  ML:  Arango 42.2 pct (favours Boisson) -- ELO and ML point OPPOSITE directions.
  Book: A 2.00 / B 1.73 (B implied 57.8 pct).
  Betfair exchange (the truth): A 1.97 / B 2.02 -> ~coin flip, A ~50.8 pct, B ~49.5 pct.
  Comm-adj: A eff 1.9215 (need 52.0 pct to break even), B eff 1.969 (need 50.8 pct).
  The value engines 12.7 pct edge on A was computed off the STALE book 2.00 and the
  outlier ELO; against the executable Betfair 1.97 the gap collapses.

DATA INTEGRITY -- COMPROMISED
  Both players reached a WTA-1000 FINAL, yet NEITHER history contains a single Toronto
  match: Arango list ends 2026-07-14 (clay), Boisson list ends 2026-06-30 (grass).
  fatigue block reads matches_14d=0 / last_match_date=null for both -- clearly broken.
  The entire path-to-final (the #1 professional edge, Step 1b) is INVISIBLE, and all
  visible form is weeks-old and off-surface (clay/grass), not this hard-court final.

RECENT FORM (stale, off-surface -- context only)
  Arango: L Zidansek(clay), L Badosa, W Nilsson 6-2 6-2, L Gasanova, L McNally -- poor,
    mostly losses vs mid ELO; no hard-court, no Toronto.
  Boisson: L Rybakina, L Sierra, L Kalinskaya 6-2 6-2, L Mboko, W Xin.Wang -- 1 win in 7,
    all clay/grass; no hard-court, no Toronto.
  Both visible records are poor and non-representative of two finalists -> confirms the
  feed is missing their actual sharp weeks. Shape/path read impossible.

ELO/RANK SANITY
  Arango rank 85 yet ELO-favourite over rank-43 Boisson = high-ELO/modest-rank ->
  suspect farmed/stale ELO; must be discounted unless live form backs it -- and live form
  is exactly what is missing. Cannot lean on the 59.1 pct.

FATIGUE: block empty/broken (0 matches) -> unusable; no extreme spot derivable. Neutral.

GATES
  G1 edge-origin: FAIL -- the only source of a positive edge is the ELO 59.1 pct, which
    the sharp exchange (~51 pct) and ML (42 pct) both contradict; against the executable
    Betfair price there is no articulable model-vs-market gap, and it cannot be validated
    with live form because the path/form data is stale/missing.
  G2 consensus:   stake-tier only -- lone-model (ELO) support, ML opposes -> capped tier
    at best, but moot given G1.
  G3 fatal-risk:  n/a (ML market; would not block) -- data-integrity risk fatal to
    confidence regardless.

VERDICT: PASS. Models split ELO-vs-ML in opposite directions, the sharp Betfair market
prices a coin flip, the value-engine edge rests on a stale book quote plus a rank-flagged
ELO, and the decisive tiebreaker (each finalists Toronto path/shape) is entirely absent
from the feed. No responsibly stakeable edge in either direction.
AH: not quoted
alt_markets: none at analysis time