Prediction Markets Watch: Underdog Spasić Faces Long Odds at UFC Belgrade, Arsenal Favored to Defend Premier League Title Over Man City

Prediction markets are lighting up on the same day one of the year’s most compelling underdog stories heads into the octagon. Between a home-crowd UFC clash in Belgrade and a Premier League title race already taking shape months before kickoff, bettors and everyday market watchers alike have plenty to weigh in on right now.

Belgrade’s Own Faces Long Odds at UFC Fight Night

Marina Spasić gets the chance every fighter dreams of — stepping into the Octagon in front of her home fans in Belgrade. She’ll do it as an underdog. Prediction markets have Stephanie Luciano favored at roughly 76.5% implied probability to Spasić’s 23.5% heading into their women’s strawweight bout at UFC Fight Night: Medić vs. Rodriguez on August 1 at Belgrade Arena.

The numbers explain why oddsmakers lean toward Luciano. The Brazilian is 7-2-1 overall and 2-1 inside the UFC, currently riding a one-fight win streak after a rear-naked choke submission of Ravena Oliveira last October. She’s also faced tougher average competition than Spasić, with a .537 opponent win rate compared to Spasić’s .449. Luciano wins mostly by decision — four of her seven career wins have gone the distance — which fits a fighter who grinds out rounds rather than chasing finishes.

Spasić brings a different profile entirely. She’s 7-1 with a finish rate of 85.7%, and six of her seven wins have come by knockout or TKO, including a body-kick stoppage and multiple finishes by punches. Her lone loss came via unanimous decision to Marina Merchuk last November — suggesting that when the fight goes to the cards, she’s more vulnerable, but when she gets to unload in close range, very few opponents survive. For fans checking live UFC odds ahead of fight night, that split profile — heavy live-underdog with real finishing power — is exactly the kind of matchup that keeps prediction markets interesting.

Independent fight models back up the market’s read. Projections give Luciano’s most probable path to victory as a decision win, around a 32% likelihood, while Spasić’s best chance at the upset comes via KO/TKO, projected near 26%. In other words: if this fight stays on the feet in scrambles and hits the scorecards, Luciano is the pick. If Spasić lands cleanly early and the crowd noise carries her forward, this could end quickly in her favor.

Arsenal Enter as Favorites to Defend the Premier League Crown

Across the Atlantic, prediction markets are already pricing next season’s Premier League title race, and the reigning champions are the clear favorites. Arsenal, who ended a 22-year title drought last season under Mikel Arteta, carry roughly 36.5% implied probability on Polymarket to repeat — with sportsbooks lining up similarly, pricing the Gunners around +145 to +150 (roughly 40-41% implied).

Manchester City sit as the clear second choice at 29.5% implied on prediction markets, with traditional sportsbooks pricing them close behind at around 11/4. That gap between the top two is real but not enormous, and it reflects a genuine two-team race atop the table, with Liverpool (roughly 16.7% implied) and Manchester United further back in the chasing pack.

Arsenal will open their title defense at home against newly promoted Coventry City on August 21, when the delayed 2026-27 season finally kicks off (pushed back a week for World Cup recovery). The Gunners will be without Declan Rice and William Saliba for the opening months, a notable early-season absence for a squad that leaned heavily on both last year. Arsenal have still been busy in the transfer market, bringing in Club Brugge winger Christos Tzolis for around £34 million to help offset Leandro Trossard’s move to Beşiktaş, and reports continue to link the club with both Julián Alvarez and Vinícius Júnior as the roster continues to take shape. Notably, when transfer target Morgan Rogers instead signed a record £117 million deal with Chelsea, it barely moved the needle on Arsenal’s title odds — a sign of how much confidence the market already has in this group.

Manchester City, meanwhile, are looking to bounce back after finishing runners-up last season. Erling Haaland remains the focal point of City’s attack, and oddsmakers still view the club as the most credible challenger to Arsenal’s crown, even with the lingering shadow of the club’s 115 financial-charge proceedings still working through the system. Fans tracking the race throughout the year can check Premier League odds as both clubs’ title chances shift week to week.

What the Markets Agree On

Across both sports, prediction markets and traditional sportsbooks are telling a consistent story. In Belgrade, the volume and pricing point to Luciano as the safer bet on paper, but Spasić’s finishing rate and home support make her a live threat for an early finish. In the Premier League, Arsenal are the favorites to go back-to-back, but City remain close enough behind that the gap between them is one strong transfer window or one hot stretch of form away from tightening further.

For fans who like putting real money behind these storylines rather than just watching them unfold, comparing lines across multiple books before either event kicks off remains the simplest way to find value, whether that’s a live underdog moneyline in the Octagon or a futures price on a nine-month title race.