# Regression Watch: The Tigers Are Running 10 Wins Below Expectation and the Market Hasn't Caught Up
The standings say the Tigers are a bad baseball team. The underlying data says the standings are lying by roughly ten and a half wins.
Detroit's expected points gap of -10.70 is the widest in Major League Baseball right now, and their cursed luck score of -58 suggests a team being punished far beyond what the process deserves. On the other side of the ledger, Tampa Bay is carrying a Luck Index of +72, a number that historically does not survive contact with September. The market is pricing both clubs based on records that the run environment, sequencing data, and expected outcomes say are fiction.
Here is where the gaps are, and what tends to happen next.
Due a Correction
Detroit Tigers (Luck Index: -58, xPoints gap: -10.70)
Ten and a half wins is not a rounding error. It is the difference between selling at the deadline and buying. Detroit's run differential and expected win models have been screaming divergence for weeks, and their record in one-run games and high-leverage situations reflects the kind of sequencing misfortune that rarely persists over full-season samples. Teams sitting this far below their expected win totals at mid-August tend to play closer to true talent the rest of the way. The lines on Tigers games still reflect the won-lost column, not the underlying performance.
New York Mets (Luck Index: -50, xPoints gap: -2.50)
The Mets' gap is more modest in wins but their luckscore tells a sharper story. At -50, New York ranks among the most snake-bitten teams in the sport. A -2.50 expected points gap means roughly two to three wins left on the table by sequencing and timing rather than talent. For a team in the National League wild card conversation, that margin matters. Bookmakers tend to anchor on recent results, which means the Mets may be undervalued in series pricing for the next few weeks.
San Francisco Giants (Luck Index: -49, xPoints gap: -4.10)
Four wins below expectation in a division this tight is the difference between fringe contender and irrelevant. San Francisco's underlying numbers, run prevention metrics, and expected output all point to a team that should have a meaningfully better record. Variance like this typically regresses, and the Giants' remaining schedule offers enough volume for correction to show up in the standings.
Living on Borrowed Luck
Tampa Bay Rays (Luck Index: +72, xPoints gap: +6.70)
A Luck Index of 72 is not a yellow flag. It is a siren. Tampa Bay is nearly seven wins above where the expected models place them, the largest positive gap in the sport. The Rays have been excellent at winning the games they probably should not have won, which is a polite way of saying sequencing has been unusually kind. That kindness has an expiration date.
Cincinnati Reds (Luck Index: +43, xPoints gap: +6.20)
Cincinnati's 6.20-win cushion of overperformance is nearly as large as Tampa Bay's, despite a lower overall Luck Index. The Reds have been a fun story this summer. The data suggests some of that story is borrowed.
Arizona Diamondbacks (Luck Index: +33, xPoints gap: +2.00)
Arizona's overperformance is the mildest of this group, two wins above expectation with a Luck Index of +33. This is less alarming in isolation, but worth monitoring as the schedule tightens and the NL West race intensifies. Lines on D-backs games may be a touch generous given the underlying profile.
The Regression Window
In MLB, expected goals luck is not the framework (that belongs to the pitch), but expected win models function the same way: they strip out sequencing noise and expose the gap between process and outcome. Over a 40-to-50 game window, these gaps close with reliable consistency. The Tigers are not going to recover all ten wins, but the direction of travel is historically clear.
The data does not care about narratives. It just keeps counting.