Federico Arnaboldi vs Maximilian Marterer Prediction (Sep 13, 2026)
Result: Maximilian Marterer won. We gave Maximilian Marterer 69% before the match, so our pick (Maximilian Marterer) was right.
Brier score (lower is better): ours 0.095, market six hours out 0.240.
| Our model | Maximilian Marterer 69% · Federico Arnaboldi 31% |
| Market price at our call | Maximilian Marterer 63% |
| Event | Challenger Biella · Clay |
| Scheduled start | Sun Sep 13, 2026, 09:20 AM ET |
| Call logged | 2026-09-12 22:48 UTC (before first serve) |
Every call we make is logged before the match and graded after it. See the live tennis board, the full match list and our public track record.
All Challenger Biella 2026 predictions
More matches on Sep 13:
- Ben Shelton vs Alexander Zverev
- Tatjana Maria vs Taylor Townsend
- Kayla Day vs Elvina Kalieva
- Elsa Jacquemot vs Liudmila Samsonova
- Emiliana Arango vs Peyton Stearns
- Janice Tjen vs Darja Vidmanova
- Bianca Andreescu vs Cristina Bucsa
- Lois Boisson vs Panna Udvardy
- Varvara Lepchenko vs Alycia Parks
- Nao Hibino vs Nadiia Kichenok
- Ilya Ivashka vs Marat Sharipov
- Caroline Dolehide vs Sara Sorribes Tormo
- Jesse Flores vs Wishaya Trongcharoenchaikul
- Carole Monnet vs Katrina Scott
- Kylie Collins vs Ekaterina Yashina
- Lea Ma vs Iryna Shymanovich
- Carlos Sanchez Jover vs Filip Pieczonka
- Ekaterina Kazionova vs Nastasja Schunk
- Rositsa Dencheva vs Alevtina Ibragimova
- Gabriella Da Silva Fick vs Stephanie Judith Visscher
- Teresa Franco Dias vs Angelina Voloshchuk
- Jesse Delaney vs Yusuke Takahashi
- Joao Lucas Reis Da Silva vs Mika Brunold
- Jessica Pieri vs Ruth Roura Llaverias
- Tena Lukas vs Madison Sieg
- Sofia Johnson vs Margaux Rouvroy
- Victoria Bosio vs Xiaodi You
- Ariana Arseneault vs Georgina Garcia Perez
- Fiona Ferro vs Noma Noha Akugue
- Pavlos Tsitsipas vs Robert Strombachs
- Johan Nikles vs Saba Purtseladze
- Jay Friend vs Max Basing
- Mark Lajal vs Titouan Droguet
- Diletta Cherubini vs Isabella Shinikova
- Justina Mikulskyte vs Chloe Paquet
- Zhibek Kulambayeva vs Malaika Rapolu
- Reese Brantmeier vs Oceane Dodin
- Cadence Brace vs Hayu Kinoshita
- Tessa Johanna Brockmann vs Aran Teixido Garcia
Regulatory Disclosures, Safe-Harbor & Terms of Use
1. Analytical & Research Use Only: iPredictSport is a quantitative research platform publishing statistical estimates for educational, informational, and analytical purposes only. iPredictSport is not an investment adviser, commodity trading advisor (CTA), registered broker-dealer, or sports wagering operator. Nothing contained on this site, in our API, or in our newsletters constitutes financial advice, investment recommendations, or sports betting advice.
2. Hypothetical & Simulated Performance (CFTC Rule 4.41): Performance figures for our autonomous paper agent and proposed bet track records are simulated, hypothetical, and based on paper audits. Unlike an actual performance record, simulated results do not represent actual trading, may not reflect market liquidity, exchange slippage, or trading bans, and cannot account for psychological risk factors. No representation is made that any user will or is likely to achieve profits or losses similar to those shown. Past performance does not guarantee future results.
3. Market Risk & Capital Loss: Trading binary contracts on prediction markets (such as Kalshi or Polymarket) or placing sports wagers involves substantial financial risk, including the possible loss of 100% of staked capital. Odds and spreads fluctuate continuously. Users assume sole responsibility for their own trading decisions and bankroll sizing.
4. Responsible Gaming & Age Requirements: Fliff sweepstakes is available to legal residents aged 18+ in eligible states. Financial prediction exchanges (including Kalshi) require 18+, and commercial sportsbooks require 21+, subject to jurisdiction. If you or someone you know has a gambling problem and wants help, confidential crisis counseling and referral services can be accessed 24/7 by calling 1-800-GAMBLER (1-800-426-2537) or visiting ncpgambling.org.
5. Affiliate & Compensation Disclosure: iPredictSport may receive affiliate commissions, referral fees, or cost-per-acquisition (CPA) compensation from links to partners (including Fliff, Kalshi, and Polymarket) at no additional cost to you. For Fliff, attribution requires entry of promo code IPREDICT or IPSLIVE in the mobile app. Fliff is a sweepstakes sports product for adults 18+ and is void where prohibited by law (18 excluded states). This commercial compensation does not alter our objective quantitative probabilities, model outputs, or editorial gates.
Full text: Terms of Use · Disclaimer · Affiliate & Advertising Disclosure · Privacy Policy