
In baseball statistics, strikeouts per nine innings pitched (K/9, SO/9, or SO/9IP) is the mean of strikeouts (or Ks) by a pitcher per nine innings pitched. It is determined by multiplying the number of strikeouts by nine, and dividing by the number of innings pitched.
How do you calculate strikeout and walk rates in baseball?
As always, it’s important to consider strikeout or walk rate in the context of the overall set of skills. K% and BB% are two of the easiest statistics to calculate. You simply divide the strikeouts or walks by the total number of plate appearances:
What is the strikeout-to-walk ratio calculator?
The Strikeout-to-Walk Ratio Calculator is used to calculate the strikeout-to-walk ratio (K/BB), which is a measure of a pitcher’s ability to control pitches in baseball statistics. The strikeout-to-walk ratio calculation formula is as follows:
What is strikeouts per nine innings pitched?
Strikeouts per nine innings pitched is used to determine how many times a pitcher strikes out a batter every nine innings. An example would be if a pitcher pitches 27 innings and strikeouts out 9 batters than that pitcher strikes out a batter three times every nine innings.
How do you calculate strikeouts and walks per plate appearance?
You simply divide the strikeouts or walks by the total number of plate appearances: Please remember that this is a raw statistic and no corrections are made for league average, park effect, or games situation.

How do you calculate strikeouts per game?
Definition. K/9 rate measures how many strikeouts a pitcher averages for every nine innings pitched. It is determined by dividing his strikeout total by his innings pitched total and multiplying the result by nine.
What is a good strikeout rate?
Any Off value above 0 is considered average while anything over 40 is almost unheard of. Freeman and Bryant, two of the best offensive players in the game, had a below average strikeout rate....When a High Strikeout Rate Doesn't Really Matter – by: Gary Russo.RatingK%Excellent10.0%Great12.5%Above Average16.0%Average20.0%3 more rows
How do you calculate strikeout walking ratio?
Definition. K/BB ratio tells us how many strikeouts a pitcher records for each walk he allows. The number is found simply by dividing a pitcher's total number of strikeouts by his total number of walks.
What is the average strikeout rate?
While MLB's strikeout rate has climbed eight percentage points in the past 16 seasons—going from 16.4% in 2005 to 24% in 2021—college baseball's strikeout rate has climbed five percentage points in just seven years. It has gone from 16.3% in 2014 to 21.0% in 2021.
How do you calculate strike percentage in baseball?
If you're truly wanting something simple, do this. Only count pitches and balls. A pitch that either is a called ball by the umpire or hits a batter is a ball. Divide that number by the total pitches, multiply it by 100 and subtract it from 100%, and you have strike percentage.
What is a good amount of strikeouts in one game?
Kerry Wood tied Roger Clemens' major league record of 20 strikeouts in a nine-inning game on May 6, 1998. Sandy Koufax is one of six pitchers who have 18 strikeouts in a game to be inducted into the Baseball Hall of Fame....18 strikeouts in extra-inning games.PitcherTom CheneyScore2–1Strikeouts21IP16Career Ks3458 more columns
Who has the best strikeout to walk ratio in MLB history?
The player with the highest single regular season K/BB ratio through 2018 was Minnesota Twins pitcher Phil Hughes in 2014, with a ratio of 11.625 (186 strikeouts and 16 walks). He is followed by Bret Saberhagen (11.00 in 1994) and Cliff Lee (10.28 in 2010).
Who has the best strikeout to walk ratio?
Career Leaders & Records for Strikeouts / Base On BallsRankPlayer (yrs, age)Strikeouts / Base On Balls1.Chris Sale (12, 33)5.33332.Jacob deGrom (8, 34)5.10173.Tommy Bond (10)5.03634.Josh Tomlin (12)4.810572 more rows
What is a good WHIP in baseball?
When it comes to Major League-caliber pitchers a good WHIP is around 1.00. Anything below 1.00 is outstanding (potential Cy Young worthy) since it demonstrates how dominant a pitcher is.
What batter has the highest strikeout rate?
Reggie JacksonListRankPlayer (2022 Ks)K1Reggie Jackson *2,5972Jim Thome *2,5483Adam Dunn2,3794Sammy Sosa2,30646 more rows
Who has the lowest strikeout rate in MLB history?
Juan Pierre, Miami Marlins Ever since Juan Pierre took his first step into a major league batter's box, he's been the most difficult hitter to strike out in baseball. Since 2000, Pierre has struck out just 5.7 percent of the time, the lowest of any other player.
Who was the hardest batter to strike out?
Contents. Over nearly 145 years of professional baseball, no player was tougher to strike out than Hall of Fame shortstop Joe Sewell. In 7,132 career at-bats, Sewell heard the umpire say “Strike three” just 114 times. That's one strikeout for every 63 at-bats, or once every 17 games, or in just .
What is a good strikeout per 9 innings?
There has been a lot of great......Top 20 Highest Strikeouts per nine innings.RankPlayerStrikeouts per Nine Innings1Yu Darvish11.122Chris Sale11.083Randy Johnson10.614Stephen Strasburg10.6016 more rows
What is a good BB per 9?
Context:RatingBB/9BB%Excellent1.54.5%Great1.95.5%Above Average2.56.5%Average2.97.7%3 more rows•Feb 19, 2010
Definition
Strikeout rate represents the frequency with which a pitcher strikes out hitters, as determined by total strikeouts divided by total batters faced.
Fantasy advantage
Strikeouts are valuable to fantasy owners and K rates correlate closely to strikeout totals. Additionally, pitchers with high K rates tend to be among the best at notching impressive ERA and WHIP figures.
Definition – What is Walk to Strikeout Ratio?
BB/K is a batting ratio that shows the ratio of walks for each strikeout.
Example
If a batter has 56 walks and 77 strikeouts, then: BB/K = 56 ÷ 77 BB/K = 0.72 On average, this batter is walked 0.72 times for each time they are struck out.
What is strikeout rate?
Strikeout rate (K%) and walk rate (BB%) measure how often a hitter walks or strikes out on a per plate appearance basis. They’re measured in percentage form, so it’s easy to compare between players and years, but you should be cautious because league average has shifted over time.
What is a player's K% and BB%?
More directly, a player’s K% and BB% are skills that you can estimate from a reasonably small amount of data. This means that if you have a good sample of PA, you can feel good about the validity of the information you’re using. Additionally, it’s important to consider the league context.
Can a player with a high strikeout rate be a good offensive piece?
If a player is still getting hits, walking, and reaching base at a high rate, then they can still be a valuable offensive piece with a high strikeout rate. As always, it’s important to consider strikeout or walk rate in the context of the overall set of skills.
Is a high strikeout rate good?
High walk rates are good for batters because it means they’re reaching base often, while low walk rates are only acceptable if a player has exceptional power or contact skills to make up for it. Strikeout rates are a bit tougher to pin down — while making an out is bad, striking out isn’t necessarily worse than any other sort of out. If a player is still getting hits, walking, and reaching base at a high rate, then they can still be a valuable offensive piece with a high strikeout rate. As always, it’s important to consider strikeout or walk rate in the context of the overall set of skills.
Leaders
Aroldis Chapman is the active leader in strikeouts per 9 innings among relievers with over 200 appearances.
Analysis
One effect of K/9 is that it may reward or "inflate" the numbers for pitchers with high batting averages on balls in play (BABIP). Two pitchers may have the same K/9 rates despite striking out a different percentage of batters since one pitcher will pitch to more batters to obtain the same cumulative number of strikeouts.
