// MLB · Playoffs · Explainer
Why playoff totals
drop in October.
Take two teams that were playing to a total of 9 in August. In October the same two teams will often be posted at 7.5 or 8. Nothing about the hitters changed. What changed is everything around them — and once you can see the reasons, a moving total stops looking like a mystery.
Last reviewed Sep 15, 2026 · Illustrative prices throughout — not a live board, not a recommendation. ← Back to the basics
What a total is
The total — the over/under — is the market's estimate of combined runs, posted as a number with a price on each side. At 7.5, -110 / -110, the book thinks a game landing above and below 7.5 are roughly equally likely, and charges the same on both. When the book leans one way, it shows up first in the price (say, over -120 / under +100) and only later in the number (the total moving to 8).
That distinction — number versus price — matters more on totals than on any other market, and it is the subject of the worked example below.
Why October runs lower
Playoff totals tend to be posted lower than the same teams' regular-season totals, and the market is not guessing. The inputs genuinely change:
- Aces pitch a bigger share of the innings. Regular-season totals are set knowing a fifth starter will pitch every five days. Playoff rotations shorten to three or four arms, and the best ones are used more.
- Bullpens are used for leverage, not preservation. The high-leverage relievers appear in the sixth or seventh inning when the game is on the line, because there is no "tomorrow" to save them for. Late innings that would leak runs in July get locked down in October.
- Managers shorten the game deliberately. Quick hooks, defensive substitutions, matchup relievers — all of it aimed at preventing runs, all of it more aggressive than in the regular season.
- The sample is the best teams. Playoff teams got there partly by pitching well. The average playoff pitching staff is better than the average staff a regular-season total was set against.
None of this means the under is a good bet. It means the number is lower because the market already knows all of this. A total of 7.5 in October is not a "low total" in the way 7.5 would be in June; it is the correct total for a different kind of game.
Total moved, or price moved?
Morning: total 7.5, over -110 / under -110. Fair probability each side, after removing the vig: 50% / 50%.
Afternoon, case 1: total still 7.5, but over -120 / under +100. The number did not move; the price did. Implied: over 54.5%, under 50%, sum 104.5%, scaled → over about 52%. The market leaned toward runs but not enough to change the number.
Afternoon, case 2: total 7, over -110 / under -110. The price is back to even, but the number dropped half a run. This is a bigger statement than case 1: the book has moved the whole market's midpoint.
Read them differently. A price move is the book adjusting how much it charges for each side of the same question. A number move is the book changing the question. Half a run on a total is a large move in baseball, where a big share of games are decided by exactly one run — it can flip which side of the line a common final score lands on.
When a total moves in the afternoon, the first thing to check is whether the starting pitchers changed. In the playoffs they usually didn't — so a late move is more often about lineup news, weather, or money. The no-vig calculator lets you compare the fair probability before and after, which is the cleanest way to see how much the market actually moved.
Air, parks, and umpires
Three things outside the rosters shape October totals more than most people expect.
- Cold air. October nights in most playoff cities are colder than the regular season. Colder, denser air tends to carry the ball less, which nudges totals down — and a sudden cold front on game day is one of the more common reasons a total drops late.
- The park. A playoff series moves between two parks. If one is a hitter's park and the other a pitcher's park, the game totals in the same series can differ by a run or more even with similar pitching. That is normal, not a mispricing.
- Umpire tendencies. Strike-zone size affects run scoring, and books adjust for the home-plate umpire when the assignment is known. It is a small input, but it is a real one, and it is a common reason for a price to move without the number moving.
Common mistakes
- Calling a 7.5 "low" because August was 9. It is a different game with different inputs. Compare it to other playoff totals, not to the regular season.
- Treating "playoff unders hit" as a rule. The market prices the same thing you are noticing. If unders were free money, the totals would already be lower.
- Confusing a price move with a number move. They are different sizes of statement. See the example above.
- Ignoring the park when a series changes cities. Game 3's total being a run different from Game 2's is often just the ballpark.
Common questions
Why are playoff totals lower than regular-season totals?
Because the games are pitched and managed differently. Aces take more innings, high-leverage relievers are used early, managers pull starters faster, and the teams involved are the ones that pitched well enough to get there. The market prices all of that in, so a lower total is the correct total for an October game, not a sign the under is undervalued.
What's the difference between the total moving and the price moving?
A price move keeps the number and changes what each side costs — say over -120 instead of -110. A number move changes the midpoint itself, from 7.5 to 7. The second is a bigger statement, because half a run in baseball can flip which side a common final score lands on. Check the fair probability before and after to see how much the market actually shifted.
Does weather change a playoff total?
Yes. Cold, dense air carries the ball less, so a cold front on game day is a common reason for a total to drop in the afternoon. Wind direction and rain delays matter too. Books adjust for it; the move is usually visible before first pitch.
Should I bet the under in the playoffs?
There is no side that is structurally correct. Playoff totals are already set lower because the market knows October games are lower scoring. Whether any specific under is worth taking depends only on whether the fair probability of the game staying under is higher than the price implies — which is a question for the no-vig calculator, not a rule of thumb.