Tszyu outpoints Spence — and the market spent all week moving toward the wrong side

News Reaction · Published July 26, 2026, 09:00 ET · Result: Tszyu UD12 Spence (117-111, 117-111, 118-110), Sydney · 18+

The scorecards were not close. Tim Tszyu beat Errol Spence Jr. by unanimous decision — 117-111, 117-111, 118-110 — in front of his hometown crowd in Sydney, and Spence, who had not fought since losing to Terence Crawford in July 2023, announced his retirement in the ring afterwards (per CBS Sports and Yahoo Sports). A nine-and-eleven-round sweep by the underdog, against a former unified welterweight champion who arrived as the betting favourite.

That last part is the story this site exists for. Because the market didn't just make Spence the favourite — it kept making him more of one as the fight approached.

The numbers

Market	Open	Close	Implied (close)	Result
Spence to win	-130	-140	58.3%	Lost — wide UD
Tszyu to win	+110	+110 to +120	45.5–47.6%	Won
Tszyu by decision	Flagged pre-fight as the value route		~+250 region	Hit — all three cards

Lines per Sports Betting Dime ("the line slowly shifted toward Spence during fight week, closing -140"), BetUS (Spence -140 / Tszyu +110) and box.live's odds tracking (Spence opened -130). Implied probabilities include operator margin.

The oddsmakers' no-vig read was roughly 53% Spence, 47% Tszyu — a coin-flip with a lean. What actually happened was not a coin-flip: Tszyu won at least nine rounds on every card. When a fight prices at 53/47 and resolves 117-111, the market didn't lose a close call — it mispriced the fighter. Specifically, it mispriced 36 months of inactivity against a 31-year-old who had fought regularly, at home, with a style built on pressure and volume.

What the market got wrong — and what it quietly got right

Wrong: the direction of the move. Fight-week money went to the name. Spence is the bigger star, the American TV draw, the former unified champion — and flow followed reputation, pushing -130 to -140. Every input that mattered on the night (activity, age curve, venue, workrate) pointed the other way. This is the boxing version of the retail-flow shading we documented on England futures during the World Cup: popular sides trade above their true price.

Right: the shape of the win. Pre-fight, Sportsbook Review's handicap flagged that Tszyu's "activity, pressure and home advantage make the underdog attractive," and that with hometown scoring "a decision win for the Australian" was the live route. That is precisely how it resolved — not by knockout, but on three wide cards in Sydney. The market's method markets were sharper than its moneyline.

The layoff discount is chronically too small. Spence had one fight in three years and got beaten to the punch from the opening rounds, per round-by-round coverage. Books historically underprice ring rust for elite names because bettors remember the fighter at his peak. If there's a transferable lesson from this card, it's that one.

Frequently asked questions

Who won the Spence vs Tszyu fight?: Tim Tszyu, by unanimous decision — 117-111, 117-111, 118-110 — in Sydney on the night of July 25–26, 2026. Errol Spence Jr. announced his retirement after the fight.
Was Tszyu the underdog?: Yes. Spence closed as a -140 favourite (58.3% implied with vig) after the line moved toward him all week; Tszyu took the fight at +110 to +120.
Why did the favourite lose so widely?: Inactivity. Spence had fought once since July 2023, and Tszyu's pressure and volume — plus home-ring scoring — controlled nearly every round. The market priced the name, not the layoff.

Sources: CBS Sports, Yahoo Sports, Forbes and DraftKings Network fight coverage and scorecards, July 25–26, 2026; closing lines per Sports Betting Dime, BetUS, Sportsbook Review and box.live, July 24–25, 2026. Implied probability = odds ÷ (odds + 100) for negative American lines, 100 ÷ (odds + 100) for positive. Prices are historical snapshots. Analysis, not betting advice.