Saturday’s Strikeout Prop Board: Eighteen Of Twenty Seven Sit Under Their Own Price

What This Board Is

A strikeout prop has two numbers on it and most analysis only argues about one. The line is the first. The price is the second, and the price is what turns a hit rate into a verdict.

So the method here is deliberately crude and deliberately complete. For every pitcher scheduled to start on September 5 who has a posted strikeout number and at least five starts on the season, pull his 2026 game log, count what share of his own starts finished above tonight’s line, and put that share next to the break even percentage the posted price demands. If a pitcher has cleared 5.5 in 65.4 percent of his starts and the over is priced at plus 105, which needs 48.78 percent, the gap is 16.6 points.

Thirty lines were posted and twenty seven are in the table. The three that are missing belong to Anthony Molina, Ethan Pecko and Mason Adams, all of whom have fewer than five 2026 starts. None of them has been guessed at.

No opponent adjustment is applied in the table. No park factor, no weather, no umpire, no bullpen usage. Those matter and they are handled in words further down, not in the arithmetic, because burying an adjustment inside a number is how a board stops being checkable.

The Full Posted Board

Eight of the twenty seven sit above the rate their own price requires, one sits exactly on it, and eighteen sit below. The median gap is minus 8.3 points. Compare that with the minus 2.35 this desk printed on Friday. The direction is the same and the size of it has more than tripled.

A Negative Median Of 8.3 Is Not An Accident

Nine rows out of twenty seven clearing or matching their price is the lowest share this desk has recorded. It is worth saying plainly what that does and does not mean.

It does not mean eighteen unders are sitting there to be taken. Every row in this table measures the over price only. A negative gap says the over is priced above the pitcher’s own record, which is a statement about that side and not automatically a case for the other one, because the under carries its own vig and its own number.

What it does mean is that on this particular Saturday the market has set strikeout lines slightly higher, or priced them slightly shorter, than the season records support. That is a normal thing for a market to do in September, when rosters have expanded, starters are being pulled earlier, and last week’s bullpen usage is doing more work than a season long game log can see.

The Top Of The Board Is An Ace At A Plus Price

Jacob deGrom is the widest row at plus 16.6. Over 5.5 at plus 105 needs only 48.78 percent and he has cleared 5.5 in 17 of 26 starts, 65.4 percent, at 10.94 per nine and 6.42 a start. A plus price on a starter whose own average sits nearly a full strikeout above the posted line is the shape this board looks for.

The argument against is the opponent. Tampa Bay strikes out at 18.47 percent, the lowest rate of any lineup on tonight’s board, and by a clear margin. That is presumably why the price is plus money in the first place. Whether a six point swing in opponent contact rate is worth more than a 17 point gap in his own record is exactly the disagreement this table is built to display rather than resolve.

Seth Lugo at plus 14.2 is the low line version. Over 3.5 at plus 115 needs 46.51 and he has cleared it in 17 of 28 starts, 60.7 percent, on a modest 6.90 per nine. He averages 4.21 a start against a line set at 3.5, and Toronto at 19.31 percent is the second softest lineup on the board, which is the honest counterweight.

Anthony Kay has the highest raw hit rate on the whole board, 73.1 percent, 19 of 26 starts over 3.5. The price is minus 150, so the break even is 60.00 and the gap comes back to plus 13.1. That is the entire point of printing the two numbers side by side.

The Bottom Is Short Outings On Long Lines

Chris Bassitt is the widest negative at minus 25.1. Over 4.5 at plus 115 needs 46.51 percent and he has cleared it in 3 of 14 starts, 21.4 percent. He strikes out 5.84 per nine and averages 3.21 a start. A line set more than a full strikeout above a pitcher’s own average, priced as a coin flip, is the most common way a row ends up down here.

Parker Messick at minus 20.4 is the more interesting one because he is having a genuinely excellent season, a 2.46 ERA over 161 innings. Over 6.5 at even money needs 50.00 percent and he has cleared 6.5 in 8 of 27 starts, 29.6 percent, at 9.00 per nine and 5.96 a start. The rate is real. The line is half a strikeout above what the rate has actually produced across a full season of outings.

Yusei Kikuchi at minus 20.2 has the sample warning attached. Nine starts, over 5.5 at minus 115, cleared in three of them. Nine is above the five start floor and well below anything worth leaning on.

Brandon Pfaadt at minus 17.8 is the plainest arithmetic on the page. He strikes out 5.32 per nine, the lowest rate in the table, and averages 3.53 a start. The posted line is 4.5.

The Rows In The Middle Worth Reading

Carlos Rodón at plus 5.1 is in the table tonight only because of a spelling fix. His posted name and his roster name differ by an accent, and the matching step had been dropping him. Over 4.5 at minus 160 needs 61.54 percent and he has cleared it in 8 of 12 starts, 66.7 percent, at 9.61 per nine. Twelve starts is a thin season and the row is a positive one.

Martín Pérez is the exact zero. Over 3.5 at even money needs 50.00 percent and he has cleared 3.5 in 11 of 22 starts, exactly 50.0 percent. There is no cleaner illustration of what this board measures than a row where the record and the price agree to the decimal.

Taj Bradley at plus 5.6 is the highest strikeout rate among the positive rows, 10.38 per nine and 6.59 a start against a 6.5 line at even money. Chicago strikes out at 23.80 percent, well above the board median, and that opponent is doing real work in the number.

Zack Wheeler at minus 8.9 is the sort of row that surprises people. He has the highest strikeout rate of any qualified starter here, 10.63 per nine, and 6.70 a start. The line is 6.5 at minus 110, so the price needs 52.38 and his own record says 43.5. Being the best strikeout pitcher on a board does not help if the line is set at your average.

Method, Line By Line

Own hit rate is the share of that pitcher’s 2026 games started in which his final strikeout total finished strictly above tonight’s posted line. Only games started are counted, so relief appearances are excluded, and a pitcher needs five of them to appear at all.

Break even is the American price converted to implied probability with no vig removal. Minus 160 becomes 160 divided by 260, which is 61.54 percent. Plus 105 becomes 100 divided by 205, which is 48.78 percent. Because the vig is left in, every break even in the table is slightly higher than a fair one, so the gap column is a conservative reading rather than a flattering one.

Opponent K rate is team strikeouts divided by team plate appearances for the 2026 season to date. Tonight’s board spans 18.47 percent at Tampa Bay to 25.31 percent at Cincinnati, a 6.84 point spread, the widest range of the week.

The One Number To Keep

Across the twenty seven measurable lines the median gap is minus 8.3 points. Eight rows clear their price, one matches it exactly and eighteen fall short. On a board this size that is not noise, and it is a sharper tilt than either of the last two nights. Whether it reflects September rosters, shorter outings, or simply a market that has moved ahead of the season records, the table does not say. It only says where the three numbers disagree.

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