Softball Versus Baseball: Dimensions, Equipment and Strategy
How fastpitch softball differs from baseball in field size, pitching distance, ball, bat, baserunning rules and strategy, with the geometry worked out so you can see why each difference matters.
Softball and baseball use the same nine fielders, the same three outs per half-inning and nearly the same vocabulary, and a casual fan would be forgiven for thinking the games are one sport on two sizes of field. They are not. The base paths are a third shorter in fastpitch softball, the pitcher throws underhand from 43 feet instead of overhand from 60 feet 6 inches, the ball is larger and heavier, and the rules about leaving a base are different. Those differences change what a good player looks like.
This article compares the two sports on the points that matter most to players, parents and fans: field dimensions, the pitching distance, the ball and the bat, baserunning rules and strategy. Where the answer depends on the league, it says so. The figures are the commonly published standards for fastpitch softball in college, high school and international play and for professional and amateur baseball at the adult level. Youth leagues often use smaller dimensions, and your league's rulebook governs.
A note on terms. "Softball" in this article means fastpitch, in which the pitcher throws hard underhand, because that is the version played in the NCAA and at the Olympics. Slowpitch, which is a different game, is covered near the end.
The field: the same diamond, scaled down
A baseball diamond has bases 90 feet apart. A fastpitch softball diamond has bases 60 feet apart. Both are squares with home plate at one corner, so the distance from home plate to second base is the diagonal of the square. For baseball that is 90 feet times the square root of two, or 127 feet 3� � inches. For softball it is 60 feet times the square root of two, or 84 feet 10¼ inches. Home plate is the same five-sided shape, 17 inches wide, in both sports.
| Feature | Baseball (adult standard) | Fastpitch softball (college, high school, international) |
|---|---|---|
| Distance between bases | 90 feet | 60 feet |
| Home plate to second base | 127 feet 3� | |
| � inches | 84 feet 10¼ inches | |
| Pitching distance | 60 feet 6 inches | 43 feet |
| Pitching surface | Raised mound, up to 10 inches high | Flat circle, 16 feet across |
| Outfield fence | At least 325 feet down the lines in new major league parks | Commonly around 200 feet; check the league rulebook |
| Regulation game | Nine innings (seven in many amateur leagues) | Seven innings |
Two entries deserve a comment. First, the baseball fence distance of 325 feet is a minimum that applies to new major league ballparks, and the rulebook sets 400 feet as the preferred minimum to center field. Many amateur fields are closer. Second, the softball pitching distance falls to 40 feet at 12 and under in common youth play, and to shorter distances for younger players. Little League baseball for roughly nine- to 12-year-olds uses 60-foot bases and a 46-foot pitching distance, so the base paths in that division are the same length as softball's.
A raised mound is a feature unique to baseball. In softball the pitcher throws from a flat circle with a pitching plate, which means there is no downhill plane to the pitch. The rules about where the pitcher's feet must be and how they may leave the plate are strict, and umpires watch them closely.
What the shorter distances change
Shrinking the field by one third does not shrink everything equally. The bases are 67 percent as far apart as in baseball, but the pitching distance is 71 percent as long (43 divided by 60.5). The pitcher stays relatively farther from the plate than the runners stay from each other, which is how the sport keeps pitching and running in balance.
The arithmetic of throws and steals follows from the base distances. A throw from third base to first base is the full diagonal of the infield: 127.3 feet in baseball and 84.9 feet in softball. A catcher's throw to second is the same diagonal. In softball, a fielder has a shorter throw and a runner has a shorter run, and the two effects roughly cancel, so close plays on the bases stay close. A simple illustration: if a runner covers 90 feet in a hypothetical 4.2 seconds, the same runner at the same pace covers 60 feet in 2.8 seconds, two thirds as long, and a shortstop's throw to first has also shrunk by a third. What does not shrink in proportion is the pitch, which is the subject of the next paragraphs.
The pitch itself is where the geometry is most surprising. The time a pitch takes to reach the plate is distance divided by speed. A softball pitch travels 43 feet and a baseball pitch 60.5 feet, so a softball pitch at any given speed arrives sooner than a baseball pitch at the same speed. To compare reaction time, scale the softball speed by the ratio of distances, 60.5 divided by 43, or about 1.41.
| Softball pitch speed | Baseball speed with the same arrival time |
|---|---|
| 55 mph | about 77 mph |
| 60 mph | about 84 mph |
| 65 mph | about 91 mph |
| 70 mph | about 98 mph |
These are arithmetic comparisons, not measurements. They ignore the pitcher's stride, the release point and the movement of the pitch, all of which change the real distance and the real flight, and they say nothing about how any specific pitcher throws. The point is the principle: a softball hitter gets less time to react than the raw speed suggests. The effect is part of why a hard-throwing softball pitcher can feel faster to a batter than the radar reading suggests.
The pitch: windmill versus overhand
In baseball the pitcher throws overhand or from a three-quarters arm slot, with the stride directed downhill from the mound. In fastpitch softball the pitcher throws underhand using a windmill or a similar circular motion, releasing the ball near the hip. Softball pitchers commonly throw complete games, and at tournaments a pitcher may appear in more than one game in a day, a workload that baseball pitchers do not share. Questions about workload and arm care for young pitchers of either sport belong with a doctor or a qualified coach.
Softball pitchers also have a different set of pitches. They throw riseballs, dropballs, curveballs, screwballs and changeups, with grips and spin that differ from baseball's. Many pitch names are the same and the pitches are not. The spin and the underhand release produce movement that is different from what baseball hitters see. The rules also differ: the pitcher must meet requirements about the position of the feet and the continuity of the motion, and an illegal pitch is penalized. For the details, see softball pitching rules and distances.
The ball and the bat
A baseball is 9 to 9¼ inches around and weighs 5 to 5¼ ounces. A fastpitch softball is 12 inches around and weighs about 6¼ to 7 ounces. The softball is larger and heavier, so it is easier to see but harder to throw far, which is one reason outfield fences sit much closer.
Bats differ in construction as well as size. The professional baseball bat is wooden, with a barrel up to about 2.6 inches in diameter and up to 42 inches long. Amateur baseball uses metal and composite bats certified under standards that limit the speed of the ball off the bat. Fastpitch bats are usually metal or composite, up to 34 inches long and up to 2¼ inches in barrel diameter. Softball bats are labeled with a length-weight "drop," which is the length in inches minus the weight in ounces; a 33-inch bat weighing 23 ounces is a drop-10. Heavier bats have smaller drops. Softball bats usually have a larger drop than the minus-three that baseball bats must have in high school and college play, which means they are lighter for their length.
Gloves differ as well. Softball gloves are typically made for the bigger ball, though fielders at the same position in the two sports use similar styles. Catchers in both sports wear a mask, chest protector and shin guards, and some softball leagues require face protection for pitchers or infielders. For details by age group and league, the guide to softball bats, gloves and equipment is the better source, and your league's rulebook is the last word.
Baserunning and the rules that differ
The biggest rule difference for a fan to notice is leaving the base. In baseball a runner may take a lead off the base as the pitcher delivers, and may be picked off. In fastpitch softball a runner must stay on the base until the pitch leaves the pitcher's hand, which is called leaving on the release. A runner who leaves early can be called out. That rule limits the lead and, with the shorter base paths, increases the importance of the first step.
Other differences are structural:
- Designated players. Baseball's designated hitter bats for a pitcher. The DP/FLEX rule used in college and high school softball pairs a designated player with a flex player and allows more substitution options than baseball's designated hitter. The details depend on the league.
- Double first base. Many softball leagues use a two-colored double base at first, where the fielder uses the white part and the runner the orange part, to reduce collisions. Baseball uses a single base.
- Innings and tiebreakers. Softball games are seven innings, and many leagues use a tiebreaker in extra innings that begins with a runner on second. Check your league's rule.
- ERA. Earned run average in softball is normally computed per seven innings, not nine, so the same ERA means something different. The formula is earned runs times seven divided by innings pitched.
Both sports share the dropped third strike, the infield fly rule, the foul-ball rules and the scoring symbols. A scorebook written for one is readable by anyone who can keep score in the other, with the difference that a seven-inning sheet needs two fewer columns.
Strategy: why the short game matters more
Because the bases are close and the pitcher is relatively close to the plate, the games reward different skills. Bunting and slap hitting are far more important in fastpitch softball than in baseball. A slap hitter, usually left-handed, starts moving toward first base as she makes contact and tries to put the ball on the ground to the left side, using speed to turn a weak grounder into a hit. The technique is explained in slap hitting in softball. In baseball, bunting for a hit is a less common tactic at the top level.
Defensive positioning is different too. The corner infielders in softball often play close to the plate to defend against the bunt and slap. The pitcher is also a full fielder, and a ball hit back at her from 43 feet away gives her little time to react.
The pitcher's influence on the game is large. A top pitcher in fastpitch may pitch several times in a tournament, and one pitcher can carry a team. The offense often depends on manufacturing runs: a walk, a bunt or a slap, a stolen base and a single. Home runs matter, but a team that can execute the short game has an extra way to score.
Analytics apply to both. Measures such as wOBA, which weights each way of reaching base by its run value, translate across sports, although the weights depend on the run environment of the league being measured. A softball version would need weights from softball data.
Slowpitch and other relatives
Slowpitch softball is a separate sport. The pitcher lobs the ball underhand in a high arc, and the batter tries to hit it. It uses ten fielders instead of nine in many leagues, usually forbids bunting and stealing, and puts the emphasis on hitting and defense. It is a popular adult recreational game. For that game, read slowpitch softball leagues and strategy.
Other relatives include modified pitch, in which the pitcher is restricted in her motion, and youth versions of both sports with smaller dimensions. College fastpitch is governed by the NCAA, and the Olympic version is governed by the world federation. The article on softball at the Olympics tells the story of the sport's appearances in the Games.
Common questions
Is softball easier than baseball? Neither is easier; they demand different skills. Because the pitching distance is shorter, a pitch of a given speed reaches the plate sooner.
Why is the pitching distance shorter in softball? The distance is a rule and not a law of physics. Governing bodies set it to suit the smaller diamond and the underhand delivery, and they have changed it from time to time.
Can a baseball player play softball? Yes, but the adjustment is real. Hitters need to adapt to the underhand delivery and the ball's movement, and fielders need to adjust to quicker plays on the bases.
Do softball and baseball use the same scoring? Yes. The symbols and the stats are the same, and the main difference is that earned run average is computed over seven innings.
What about the ball size at younger ages? Some youth softball leagues use smaller balls, and youth baseball leagues use shorter distances. Follow your league's published specifications.
Where to go next
If you want to follow the college game, the NCAA softball tournament format explains how the field is chosen, and the softball section of this site tracks the sport. To read a game's record, how to read a baseball box score works for either sport with a few adjustments. The softball topic page collects the latest coverage.