Why is a 'K' used for a strikeout in baseball?
The use of the last letter of Struck instead of the first to
denote a strikeout dates back to when Henry Chadwick developed the
box score in the late 1850's. Chadwick often used the last letter
instead of the first, especially if he considered that letter to be
the more prominent one in the word. Chadwick said "the letter K in
struck is easier to remember in connection with the word, than S."
He also used L for Foul and D for Catch on Bound. Only the K
survived into the 20th Century. Source: Paul Dickson's The New
Dickson Baseball Dictionary and Alan Schwarz's The Numbers Game.
The common view that the K was used because the S was taken (by
Sacrifice, Stolen Base, or Single) appears to be erroneous.
Other answers from the community:
- 'K' was chosen to represent Struck, because S was already taken
to mean Stolen base. The K and S are both still used today.
- 'K' is a Strike
- The symbol "K" is used because it is made with 3 strokes of the
pencil, symbolizing the 3 strikes for the strikeout. Scorekeepers
use a backward K (or a KL, or Kc) when a batter strikes out
looking/called 3rd strike.
- K stands for 'struck'. Back in the old days, scorekeepers used
letters for symbols, K is the only one that we still use
- Fyi, to help keep things clear in record keeping, a backwards k
is used if the player struck out looking.
- I always thought that K was short for K.O. like knock out.
- Back in the day, score keeping was done entirely with letters,
no numbers (Double was D, not 2B). When "strikeout" became an
official statistic, "K" was the first letter not already being used
(S- Single, T- Triple, R-Run, I-Inning, then K) So K became
strikeout, and it was one of the few from that era that actually
- We owe the "K" to an early sportswriter named Henry Chadwick.
In fact, Chadwick and another writer named M.J. Kelly are largely
responsible for the scoring system baseball uses today. Chadwick
already had "S" slated for "sacrifice." So a strikeout became a
"K", after the last letter of the word "struck." The reason a
strikeout isn't a "T" is because "struck" was the preferred term of
- The symbol "K" in baseball scorecards represents "Strikeout."
Why? Well, baseball pioneer Henry Chadwick, the NY Herald's first
baseball editor, first used the symbol in 1868. As far as he was
concerned, the letter "K" was the "prominent letter of the word
strike," adding that "the letter K in struck is easier to remember,
- While the above answer may have some basis in fact, there is
another explanation. There are two ways to strike out. (In fact,
there are two ways in which a player can strike out, and reach
first base safely, if the third strike is not caught in the air by
the catcher. How do you score that? I'm not telling. ;-)) A player
can strike out swinging, or be called out on strikes. To make the
distinction, the letters SOS and KOS are used. Try to shorten it.
KS? COS? CS? It is an important statistic to the manager, that
wants to know who will let the third strike go by, and who will
swing. A "K" merely denotes a generic strikeout.
- This might be a myth but I was taught it was a simple way of
counting strikes. First strike, line one "|" second strike line two
"/", third strike line three "". That makes your K. The reverse or
"backwards" K indicates the third strike was a called strike.
- I think it might be short for K.O. or knock/strike out. sort of
a link to boxing.
- A "k" means a strike out but you can be more specific than
that. if it is forwards than that means that they struck out
swinging if it is backwards it means that they didn't swing at the
See the Related Link to the left for "The Dugout Review of The Joy
of Keeping Score."