Nolan Ryan struck out 5,714 batters. The man in second place struck out 4,875. The gap between first and second on the all-time strikeout list is 839, which is more than most good careers produce in total, and it is the largest margin at the top of any major counting record in baseball. Hank Aaron led the home run list for 33 years by 41. Ryan leads this one by more than four full seasons of work.
That is the fact worth sitting with before the rest of the list, because it explains the shape of everything below it. This is not a record somebody is closing in on. It is a record that got away from the sport.
Nolan Ryan, 5,714
Ryan pitched 27 seasons, from 1966 to 1993, which is the first half of the answer. The second half is that he struck out 300 batters in a season six times, between 1972 and 1989. Only Randy Johnson has matched that, and Johnson needed the highest strikeout rate of any starter in history to do it.
His 1973 is the modern single-season record: 383 strikeouts across 326 innings, with a 2.87 earned run average. He was 26. The following year he struck out 367 in 332.2 innings. Those two seasons alone produced 750 strikeouts, which would rank inside the top 300 careers in baseball history on their own.
The longevity is the part people underrate. Ryan threw his last pitch at 46, and he was still striking out 46 men per hundred batters faced in his forties. He is the only pitcher to record more than 5,000 strikeouts, and he passed 5,000 in 1989, four years before he retired.
Randy Johnson, 4,875
Johnson is the closest anyone has come, and he is 839 away. He debuted in 1988 and finished in 2009, and for a stretch in the late nineties and early two thousands he was the most unhittable pitcher alive.
His 2001 is the best strikeout season of the modern era by rate: 372 strikeouts in 249.2 innings, which is 13.4 per nine. Ryan never struck out that many per inning. Johnson also holds the second, third and fourth highest strikeout seasons since 1990, with 364 in 1999 and 347 in 2000.
What Johnson did not have was Ryan's start. He did not become Randy Johnson until he was 29. Take the first four seasons of Ryan's career off the list and the two men finish much closer together.
Roger Clemens, 4,672
Clemens sits third, 1,042 behind Ryan, across 24 seasons from 1984 to 2007. He is the only man in the top four who was never primarily a strikeout pitcher by reputation, which is a strange thing to say about somebody with 4,672 of them.
He struck out 20 batters in a game twice, ten years apart, in 1986 and 1996. Nobody else has done it twice.
Steve Carlton, 4,136
Carlton pitched from 1965 to 1988 and is the last man on this list who spent his whole career before the strikeout era properly arrived. His 1972 is one of the strangest seasons in the record book: 27 wins for a team that won 59 games all year.
He is fourth all time and he is the highest-placed left-hander until you reach Johnson above him.
The rest of the four thousand and three thousand clubs
Below Carlton the list settles into a group of durable, excellent, mostly unglamorous careers:
- Bert Blyleven, 3,701
- Tom Seaver, 3,640
- Don Sutton, 3,574
- Justin Verlander, 3,554
Blyleven is the interesting entry. He waited fourteen years for the Hall of Fame and got in on the strength of exactly this kind of number, because the case for him was never a peak, it was twenty-two seasons of being better than almost everybody.
He is fifth all time in strikeouts and he won exactly one strikeout title, in 1985, with 206. That is the lowest total he ever needed and the only year he ever finished first. Three times he struck out more than 240 and did not lead his league, because in 1973 and 1974 the man ahead of him was Ryan, throwing 383 and 367.
Seaver at sixth is the reverse: a famous pitcher whose reputation was always larger than his counting totals, which are themselves enormous.
Justin Verlander and the modern problem
Two active pitchers sit inside the top ten: Verlander, who debuted in 2005, and Max Scherzer, who debuted in 2008. They are separated by 14 strikeouts and they are both about 2,160 behind Ryan.
To close that from where they stand, a pitcher would need to average 250 strikeouts a season for another nine years, starting in his forties. Neither is going to, and the reason is not talent. Scherzer has struck out 10.51 men per nine innings across his career, a full point better than Ryan managed. It has not been close to enough.
Why the record is safe, in two numbers
Here is the paradox at the centre of this list. The modern game strikes out more batters than any era in the sport's history, and it is not close:
| Decade | League strikeouts per nine | Best single season | |---|---|---| | 1920s | 3.12 | 262 | | 1950s | 4.43 | 263 | | 1970s | 5.16 | 383 | | 1990s | 6.19 | 364 | | 2010s | 7.87 | 326 | | 2020s | 8.65 | 281 |
The rate has nearly tripled. Pitchers today miss bats at a level Ryan's contemporaries could not approach, and hitters strike out more willingly than any generation before them.
And the best single-season total has been falling for fifty years.
Both columns are true at once, and the reason is innings. Ryan threw 326 of them in 1973. In the 2020s a starter who reaches 200 has had a workload worth remarking on. That 383-strikeout campaign required Ryan to be handed the ball about a third more often than a modern ace ever will be. You cannot strike out men you are not permitted to pitch to.
That is the whole story of this record. It was set by a man allowed to throw more than anyone is allowed to throw now, for longer than anyone now gets to pitch, with a fastball nobody could touch at either end of it. The sport got better at the skill and worse at accumulating it.
The 3,000 strikeout club, in full
Twenty pitchers have reached 3,000. Four have reached 4,000. One has reached 5,000. Here is the whole membership:
| # | Pitcher | Strikeouts | Seasons | K/9 | |---|---|---|---|---| | 1 | Nolan Ryan | 5,714 | 27 | 9.55 | | 2 | Randy Johnson | 4,875 | 22 | 10.61 | | 3 | Roger Clemens | 4,672 | 24 | 8.55 | | 4 | Steve Carlton | 4,136 | 24 | 7.13 | | 5 | Bert Blyleven | 3,701 | 22 | 6.70 | | 6 | Tom Seaver | 3,640 | 20 | 6.85 | | 7 | Don Sutton | 3,574 | 23 | 6.09 | | 8 | Justin Verlander | 3,554 | 21 | 8.96 | | 9 | Max Scherzer | 3,540 | 19 | 10.51 | | 10 | Gaylord Perry | 3,534 | 22 | 5.94 | | 11 | Walter Johnson | 3,508 | 21 | 5.34 | | 12 | Greg Maddux | 3,371 | 23 | 6.06 | | 13 | Phil Niekro | 3,342 | 24 | 5.57 | | 14 | Fergie Jenkins | 3,192 | 19 | 6.38 | | 15 | Pedro Martinez | 3,154 | 18 | 10.04 | | 16 | Bob Gibson | 3,117 | 17 | 7.22 | | 17 | Curt Schilling | 3,116 | 20 | 8.60 | | 18 | CC Sabathia | 3,093 | 19 | 7.78 | | 19 | John Smoltz | 3,084 | 21 | 7.99 | | 20 | Clayton Kershaw | 3,052 | 18 | 9.62 |
Two things jump out of that table.
The first is the seasons column. Seventeen of the twenty pitched at least nineteen years, and the shortest career on the list is Bob Gibson's seventeen. There is no route onto this list that does not involve being good for two decades.
The second is that K/9 and position barely relate to each other. Walter Johnson is eleventh with a rate of 5.34, which is below the league average of the 2020s. Pedro Martinez is fifteenth with 10.04, one of the five best rates ever recorded. Greg Maddux, who is twelfth, was famous precisely for not striking people out, and he has more strikeouts than Bob Gibson.
The step from 3,000 to 4,000 eliminates sixteen of these twenty. The step from 4,000 to Ryan eliminates the three who are left.
Rate against volume
Ryan struck out 9.55 batters per nine innings across his career. Randy Johnson struck out 10.61. Sandy Koufax, whose peak is the one people reach for when they want to describe unhittable, struck out 9.28.
So Johnson was the better strikeout pitcher per inning, comfortably, and he still finished 839 behind. Koufax was not far off Ryan's rate and finished 3,318 behind, because he pitched twelve seasons and Ryan pitched twenty-seven.
This is the clearest illustration of what the record actually measures. It is not a list of the most overpowering pitchers in order. Ryan is first on it because he was overpowering AND he was there for a very long time, and the second half of that sentence is doing more work than the first.
The single-season list
Career totals reward durability. Single seasons reward peak, and the top of that list is a different set of names:
- Nolan Ryan, 383 in 1973
- Sandy Koufax, 382 in 1965
- Randy Johnson, 372 in 2001
- Nolan Ryan, 367 in 1974
- Randy Johnson, 364 in 1999
Koufax's 382 came in his second-to-last season. He retired at 30 with an arm that would not work any more, which is the counterfactual that hangs over every discussion of this record: he struck out 382 men in 1965 and was finished eighteen months later.
Rube Waddell struck out 349 in 1904 across 383 innings, which is the deadball era doing something the deadball era was not supposed to be able to do.
The single-game record, and the game nobody talks about
The most strikeouts in a nine-inning game is 20, and five men have done it: Roger Clemens in 1986 and again in 1996, Kerry Wood in 1998, Randy Johnson in 2001, and Max Scherzer in 2016. Clemens is the only one to do it twice, ten years apart, which is its own kind of longevity argument.
Wood's is the one people bring up, because he was 20 years old and it was his fifth major league start.
There are two games above all of them that rarely get mentioned. Tom Cheney struck out 21 for the Washington Senators on 12 September 1962, but it took him sixteen innings, so it sits in the record book as the most in a game rather than the most in nine. He threw all sixteen.
And on 21 August 1943, Alvin Gipson struck out 20 in nine innings for the Birmingham Black Barons of the Negro American League, 43 years before Clemens did it in Boston. Those statistics became major league records in 2020, when MLB recognised the Negro Leagues. Gipson got there first and almost nobody knows his name.
What the list rewards
Read the career list from the top and every man on it pitched at least twenty seasons. Ryan pitched 27, Sutton 23, Clemens 24, Carlton 24, Blyleven 23.
A strikeout record is a health record. It is a measure of how many times a pitcher was handed the ball and still had an arm that worked when he took it, which is why the list rewards the same thing the home run list does: not the best version of a player, but the longest one.
Every man on this list turns up in the daily puzzles, and the back half is where a round is usually decided. Name an all-time leaderboard from memory in MLB Top 10 Quiz, or work out a pitcher's career one club at a time in MLB Career Path.