September 11, 2023. Fourth play of the New York Jets’ season. Aaron Rodgers, their star quarterback paid a fortune to bring them back to the top, plants for a spin move, his left foot catches in the turf. Torn Achilles. Season over in four snaps.
What happened next had nothing to do with football. In less than 24 hours, the Jets’ returns to win the Super Bowl went from 19.00 to 67.00 at BetMGM — and from 17.00 to 61.00 at DraftKings (Sports Illustrated, Yahoo Sports, Sept. 12, 2023). No official statement, no balance sheet. Just a piece of information, and a market digesting it live.
Sound familiar? It’s exactly what happens when a company posts a bad quarter: the news drops, the price adjusts. The difference is that in sports, everything moves faster.
Returns are a price — not an opinion
We often think returns tell us “which team is better.” Wrong. Returns are a price, set by the clash between those who position and those who make the market. Exactly like a stock price reflects, at any given moment, the sum of investors’ positions.
And that price translates into probability. Back to the Jets: returns of 19.00 correspond to an of about 5% (1 ÷ 19). After the injury, at 67.00, that probability drops below 1.5% (1 ÷ 67). In a single day, the market cut their title chances by two-thirds. Nobody “decided” that: it’s the crowd of investors and the market makers who repriced in real time.
Two fuels move that price, just like on the stock market:
- Information — an injury, a leaked lineup, the weather, a suspension.
- Money flow — when a lot of money piles onto one side, the price shifts to rebalance the market.
Faster than the stock market, and for good reason
A stock usually waits for an appointment: the quarterly earnings release, a scheduled announcement. The market knows when the news will hit, and it braces for it.
Sports, on the other hand, run on constant surprise. An injury gives no warning. Operators employ teams that monitor the news non-stop, and a confirmed injury moves a line faster and harder than weather, travel, or tactical tweaks. In a small-roster sport like basketball, a single top player can be worth several points on a game’s margin: the moment they’re ruled out, the line moves within the minute.
Same mechanics as the stock market, then, but a far more nervous tempo. Where a listed stock often takes a session to digest news, returns can reprice in minutes. And it’s precisely that tempo that creates excess.
The trap: mistaking speed for certainty
Because it moves fast, we tell ourselves “the market knows.” Not so simple. Markets that react in the heat of the moment tend to overreact.
This isn’t a barstool hunch — it’s documented. Analyzing football returns across 20 leagues over 12 seasons, economist Edward Wheatcroft shows that returns overreact to runs of results — a team on a winning streak gets returns that are too short, and vice versa. Enough for a strategy exploiting the bias to deliver “a sustained and robust profit” (Journal of Quantitative Analysis in Sports, 2020).
The cause? What Wheatcroft calls the hot-hand fallacy: we overestimate how much a team “in form” will stay that way, like a basketball player we believe can’t miss after three buckets. The market extrapolates a recent streak far beyond what it actually predicts.
See the parallel? It’s the same reflex that, on the stock market, sends people piling into a stock that “only goes up,” or panic-selling on a scary headline — before everyone realizes it wasn’t that bad, and the price bounces back.
The bias that costs you (sports, crypto or stocks)
Put those two observations together — prices move fast, and they overreact — and you get the number-one source of beginner losses, whatever the asset:
- In sports, you position on the “red-hot” team at returns inflated by its streak.
- In crypto, you buy the token that 3x’d in a week, at the peak of the FOMO.
- In stocks, you rush into the name everyone’s talking about, after the run-up.
Every time, you’re paying a price that already bakes in the collective hype. You’re not buying an opportunity: you’re buying other people’s excitement.
So what does it mean for you?
- The price isn’t the truth. It’s a collective estimate, often right, sometimes in a panic. Learn to read it as a probability, not a certainty.
- Overreaction creates the opportunity. The edge is found when the market exaggerates — in either direction — not when it’s right along with everyone else.
- Keep a cool head when others lose theirs. Discipline beats emotion, on a game as on a .
This is exactly the logic — read a price, spot the overreaction, manage your capital — that ties sports, crypto and stocks together. Three fields, one game.
Sources
- Sports Illustrated — “Jets Super Bowl Returns Plummet After Aaron Rodgers’ Injury” (Sept. 12, 2023) — si.com
- Yahoo Sports — “Jets’ Super Bowl returns skyrocket after Aaron Rodgers’ Achilles injury” (Sept. 12, 2023) — sports.yahoo.com
- E. Wheatcroft — “Profiting from overreaction in soccer trading returns”, J. of Quantitative Analysis in Sports, 16(3), 2020 — reference
Yoseri News is an educational outlet. Nothing in this article is investment advice.