2026 Rolex Monte-Carlo Masters: Fonseca [40th] vs. Diallo [36th] Prediction, Odds and Match Preview

On Sunday, Gabriel Diallo (No. 36 in the world) meets Joao Fonseca (No. 40) in the Round of 64 at the Rolex Monte-Carlo Masters.

Fonseca has -325 odds to claim a win in this match versus Diallo (+240).

Tennis odds courtesy of BetMGM Sportsbook. Odds updated Saturday at 10:37 AM ET. For a full list of sports betting odds, access USA TODAY Sports Betting Scores Odds Hub.

Joao Fonseca vs. Gabriel Diallo matchup info

• Tournament: Rolex Monte-Carlo Masters
• Round: Round of 64
• Date: Sunday, April 5
• Court Surface: Clay

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Fonseca vs. Diallo Prediction

Based on the implied probility from the moneyline, Fonseca has a 76.5% to win.

Fonseca vs. Diallo Betting Odds

• Fonseca’s odds to win match: -325
• Diallo’s odds to win match: +240
• Fonseca’s odds to win tournament: +5000
• Diallo’s odds to win tournament: +30000

Fonseca vs. Diallo matchup performance & stats

• Fonseca is 4-5 on clay over the past 12 months, with zero tournament victories.
• Fonseca has won 79.5% of his service games on clay over the past year and 23.1% of his return games.
• On clay over the past 12 months, Fonseca has converted 20 of 71 break points (28.2%).
• In the the Miami Open presented by Itau, Fonseca’s most recent tournament, he was beaten 4-6, 4-6 by No. 1-ranked Carlos Alcaraz on March 20 in the Round of 64.
• Diallo is 7-7 through six tournaments on clay over the past year.
• Diallo is 139-for-180 in service games on clay surfaces (winning 77.2%) and 41-for-175 in return games (23.4%).
• On clay courts Diallo ranks 70th in break point winning percentage (28.8%) after going 32-for-111.
• In his most recent tournament (the Tiriac Open) on April 1, Diallo squared off against Alex Molcan in the Round of 16 and was taken down 2-6, 2-6.

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