$1,500
Winner to face top seed Carlos Alcaraz in R2.
Brazilian prodigy Joao Fonseca will battle unseeded Hungarian Fabian Marozsan in Round-1 of the 2026 Miami Masters on Wednesday. After a momentary dip in form, Fonseca showed the world what he was capable of against Jannik Sinner at Indian Wells. Meanwhile, Marozsan is looking to improve to a 50% success rate in the ongoing season. While the latter of the two has the edge in the rivalry so far, expect fireworks at the Miami Gardens. The winner of this clash is set to face World No. 1 Carlos Alcaraz in the Round of 64.
Joao Fonseca is currently ranked No. 39 in the ATP Rankings. A holder of two titles on the circuit, the 19-year-old has been touted to join Alcaraz and Sinner to form the next Big-3 on the men’s side. In 2026, Fonseca has four wins and four losses to his name. The Brazilian is a former Top-25 sensation with 42 tour-level main draw wins. While Fabian Marozsan is ranked below him, the 26-year-old has all the weapons to pull off an upset. He is searching for his first career championship run. Although Marozsan is yet to go past the Round of 32 at majors, he is the highest ranked male player from Hungary.
According to the tennis betting odds on BetMGM, Joao Fonseca (-295) is the favorite to win this opening round encounter in the second half of the Sunshine Swing. Fabian Marozsan (+225) follows him as the underdog for Wednesday’s contest. Here’s how we are betting on this Round of 128 duel at the ATP Miami Open 2026, including our best bets, supporting odds and a set-score prop for bigger prices.
Given below are the latest odds for Joao Fonseca vs Fabian Marozsan from the top sportsbooks. We are looking at the match money line, game handicap and total games, plus some set betting markets where available.
| Market | BetMGM | FanDuel |
| Moneyline | Fonseca (-295), Marozsan (+225) | |
| Game Handicap | Fonseca -3.5 (-107), Marozsan +3.5 (-121) | |
| Total Games | >22.5 (-117), <22.5 (-112) | |
| Set Betting | Fonseca 2-0 (-114) |
Our Pick: Total Games in Set-1 Under 9.5 at +150 Odds.
Fabian Marozsan leads the head-to-head against Joao Fonseca by 1-0 so far. The Hungarian got the better of his counterpart at the 2025 Rome Masters, where he beat him in straight sets. This will be the first meeting between these two players on an outdoor hard court.
| Event | Round | Winner | Score |
| 2025 Rome | Round of 128 | Fabian Marozsan | 6-3 7-6(4) |
The ATP Miami Open 2026 can be streamed live on various platforms and channels, depending on which part of the world you are watching from. This includes Tennis TV, Tennis Channel, Sky Sports, beIN Sports, ESPN International, Setanta Sports and TSN.
| Date | March 18, 2026 |
| Time | |
| Tournament | ATP Miami Open, Round of 128 |
| Surface | Outdoor Hard Court |
| Court | Hard Rock Stadium, Miami Gardens |
| TV/Streaming | Tennis TV, Tennis Channel, Sky Sports, beIN Sports, ESPN International, Setanta Sports and TSN. |
(Image Credits: Jayne Kamin-Oncea, Imagn Images)
