Bottom line: Detroit's -12.60 expected-points gap was the widest in baseball, and Tampa Bay's +87 luck score was the most inflated.
Through October 25, 2026, with the MLB regular season complete and the playoffs underway, we can finally assess the full 162-game picture for the sport's biggest luck outliers. The expected-points model, built on run differentials, sequencing, and leverage-weighted outcomes per Baseball Savant's Statcast data, reveals six teams whose final records told a materially different story than their underlying performance. For bettors parsing postseason lines or already looking ahead to 2027 futures, the mlb luck rankings below are worth sitting with.
Due a Correction
| Team | Luck Score | xPoints Gap |
|---|---|---|
| Tigers | -58 | -12.60 |
| Giants | -53 | -6.60 |
| Mets | -51 | -3.70 |
Detroit Tigers. No team in baseball absorbed more bad sequencing luck than the Tigers. A luck score of -58 and a season-long xPoints gap of -12.60 mean Detroit's record undershot their run environment by roughly eight wins. Their bullpen posted a .342 BABIP in high-leverage spots, per Statcast, a mark that historically regresses by 30-40 points the following season. Markets pricing 2027 Tigers win totals off their final record, rather than their underlying production, may be undervaluing this roster.
San Francisco Giants. The Giants landed at -53 on the luck score index with a -6.60 xPoints gap. Their offense ranked 11th in expected wOBA but 19th in actual wOBA, a disconnect driven largely by a league-worst .238 BABIP with runners in scoring position. That kind of situational suppression almost never persists across full seasons, and sure enough, it took an entire year's worth of bad timing to produce a gap this wide.
New York Mets. A -51 luck score and -3.70 xPoints gap make the Mets the mildest case on this side of the ledger, but it is still notable. Their rotation's strand rate sat nearly four points below expected, per Statcast pitch-tracking models, suggesting the bullpen inherited more damage than it deserved. The gap is modest enough that it may have already started correcting in September.
Living on Borrowed Luck
| Team | Luck Score | xPoints Gap |
|---|---|---|
| Rays | +87 | +7.80 |
| D-backs | +50 | +4.10 |
| Reds | +38 | +9.80 |
Tampa Bay Rays. An 87 luck score is not a typo. The Rays won close games at an extraordinary clip, going 34-16 in one-run contests. Their Pythagorean record lagged their actual record by nearly five wins, and the xPoints gap of +7.80 confirms it. Variance like this typically regresses hard. Bookmakers tend to adjust slowly on teams with this profile, particularly if the brand carries a "smart organization" premium.
Sometimes the smartest thing a front office does is get lucky at the right time.
Arizona Diamondbacks. A +50 luck score and +4.10 xPoints gap put Arizona comfortably in overperformance territory. Their .719 win percentage in games decided by two runs or fewer was the highest in the National League and roughly 80 points above their expected mark. If Arizona is still alive in the postseason bracket, the lines may reflect a win rate that the underlying numbers do not support.
Cincinnati Reds. The most interesting case here. The Reds posted a modest +38 luck score but the largest positive xPoints gap on either side of the board at +9.80. That split suggests a team whose underlying run differential was genuinely poor but whose record was buoyed by relentless clutch hitting. Cincinnati's .298 average with RISP and two outs, per Baseball Savant, was 41 points above their expected mark in those situations.
The Regression Window
In baseball, luck-driven gaps of this magnitude typically correct over 40-60 games, which means the first six weeks of a new season tend to be the sharpest regression window. Playoff series, compressed into five or seven games, are too short to guarantee correction but too high-leverage to ignore when the underlying numbers diverge this sharply from the record. The data does not tell anyone what to do. It just sits there, quietly disagreeing with the standings.