The conclusion of the GIIB article shows that team gOBP has a correlation coefficient of 0.95 with R/G, a slight but meaningful improvement over the correlation coefficient of 0.93 between team OBP and R/G. This first test is straightforward: using Retrosheet, I collected team R/G, OBP, and gOBP for all 1,482 team seasons dating back to 1955. I then fit a linear model to these data and computed the correlation coefficients for each pairing. The results are below.
Hitting a baseball is one of the toughest skills in all of sport. The entire sequence, from the pitcher's release of the ball to the contact with the bat, happens in the blink of an eye. This quick series of events combines two of the most important skills for a baseball player: hand-eye coordination and power development. Hand-eye coordination helps the batter locate the ball during its flight and appropriately maneuver the bat. The power element is crucial for adding distance to hits and building a well-rounded batter.
Compared to catching a hard-hit line drive on the run, it would seem that catching the pop-up fly would be simple. But it isn't. It may be that, given enough time, the room for error in estimation of flight path actually increases; a player may think himself into an error. This is like trying to draw a straight line freehand. If you look where you want to draw the line and then just draw it there without concentrating, you will probably succeed in drawing a fairly straight line. If, on the other hand, you worry about how straight the line is, millimeter by millimeter, the task becomes impossible. Catching a ball may be easier when there's no time to think.
An example is the Internet Archive, which uses the term in ranking downloads. Its "batting average" indicates the correlation between views of a description page of a downloadable item, and the number of actual downloads of the item. This avoids the effect of popular downloads by volume swamping potentially more focused and useful downloads, producing an arguably more useful ranking.
Like any stat, OBP is not without its flaws. For one, OBP does not tell us how a player reached base. A home run and a walk count the same when computing OBP. Obviously, a home run is far more valuable than a walk. In addition, OBP is context neutral, meaning that a single with the bases empty and no outs counts the same as a single with the bases loaded and two outs.
I do not consider loading the body to be a part of the actual swing, because it isn’t. However, there CAN NOT be an efficiently powerful swing without a proper loading sequence. The loading sequence for a any hitter is fundamentally the same but it may change due to the size, strength, and talent level of the individual. Players who are limited in size need to think about a more obvious momentum builder move like Jose Bautista shown below.
To show an example on this comparison of statistics, two ballplayers who play the same position but have drastically different approaches will be examined:  Robinson Cano (Yankees 2B) and BJ Upton (Devil Rays 2B/CF).  Both have somewhat similar batting averages this season - despite a slow start, Cano is hitting .263 while Upton is at a clip of .271.  The difference between batting averages is less than 1 hit per 100 at bats, so they are nearly the same.  When comparing their on base percentages, though, a huge difference is discovered.  Cano, who almost never walks, has an on base percentage of just .298, way below the major league average of .330.  Upton, on the other hand, carries a .381 on base percentage.  So although the two reach base almost exactly the same amount on hits, Upton reaches base nearly 1 more time every 10 at bats than Cano simply because he is willing to take a few strikes in order to draw monumentally more walks.

HR/FB% – This stands for home run to fly ball rate, which is the percentage of fly balls a player hits that end up as home runs. While this stat doesn’t play much of a role in BABIP due to the fact that home runs are factored out of the BABIP equation, it is definitely a key component of a player’s batted ball profile. HR/FB% is a stat that is largely skill based, but typically doesn’t see much fluctuation from year-to-year, so a player that posts a HR/FB% much lower than their career norm is very likely to bounce back the following season and vice versa.
In baseball statistics, on-base percentage (OBP; sometimes referred to as on-base average/OBA, as the statistic is rarely presented as a true percentage) is a statistic generally measuring how frequently a batter reaches base.[1] Specifically, it records the ratio of the batter's times-on-base (TOB) (the sum of hits, walks, and times hit by pitch) to their number of plate appearances.[1] It first became an official MLB statistic in 1984.
The key to hitting a baseball with power is staying connected to the body's rotational energy. Body rotation is powered by the larger and more powerful muscles of the legs, hips and torso. For a batter to hit the ball with maximum power, his swing mechanics must stay connected and make efficient use of these larger muscle groups. This article discusses the important steps needed to produce a swing that transfers the body's rotational power into hitting power.
Powerful Legs that are trained through various movement patterns and skill sets. For example, you create a ton of power by super setting (performing these two exercises one after the other with little rest, then repeating) an exercise like a squat and a box hop. This combination of a strength development exercise and a plyometric exercise create explosive power.

The Power Drive Performance Sled trains Baseball players to initiate their power from the ground up for Pitching, Hitting, Position Throwing and Fielding. It is a baseball and softball training aid for developing skills and also is a conditioning aid for adding functional strength. The PPD Sled can be used while performing baseball and softball skill movements while practicing pitching, hitting, position throwing and fielding making player more athletic. It is ergonomically designed for baseball and softball training. Sled training package includes 3 separate products, a Power Sled, TurfCordz Waist Belt and Turfcordz 10′ Tether Pull Strap with 2 Caribinas. All three products in sled training package are made 100% in the USA. Owners have access to web based training site with workout drills for pitching, hitting and fielding.
Runs scored (R): Aside from when a player hits a home run, he'll need some help from teammates -- most of the time -- to score a run. Still, players can do a lot to increase the number of times they score. Getting on base frequently, stealing bases, taking extra bases on singles or doubles, taking a base on a passed ball right in front of the catcher or even being such a scary baserunner to draw a balk are ways to spin around the bases better than others. Guys who score the most runs are great players, not those simply lucky to have good teammates driving them in. Here are the top 10 all-time in runs scored: Rickey Henderson, Ty Cobb, Barry Bonds, Hank Aaron, Babe Ruth, Pete Rose, Willie Mays, Cap Anson, Stan Musial and Alex Rodriguez. Marginalize that group at your peril. - Snyder
A Strong Core is essential to a softball player. So why do so many players have a weak abdominals? Good question. This is another exercise routine that can get lost in translation.  You’re not training your core to look good in your bathing suit, you’re training your core to be functional; to rotate when you swing, open up and rotate when you throw, stabilize your hips and create balance.  Your goal is to mimic your core work in a fashion that transforms power onto the field. Here is a favorite exercise of mine to create rotational core power; rotational medicine ball throws. Start in your hitting stance and hold onto a medicine ball then rotate into a swing. Sounds pretty simple but super effective. My second favorite is bear crawls with bands. The key to this exercise is doing it correctly. Your butt should not be up in the air, back stays flat and your feet should move forward outside of your hips. This is a definite twofer. This exercise hits the hips and core in one movement.
To test this, I collected all batters in the Retrosheet database since 1975 who logged at least 300 plate appearances in two consecutive seasons. (Multiple batters, of course, could appear multiple times.) This covered 5,607 batters, from Barry Bonds's 2002 (.582 OBP, .587 gOBP) to Mario Mendoza's 1979 (.216 OBP, .219 gOBP). As before, I fit a linear relationship between each statistic in year 1 and the same statistic in year 2, and determined the respective correlation coefficients.
Runs batted in (RBI): It's one of the most familiar and comfortable offensive stats around, and it's still got plenty of advocates. It's one of my least favorites, not only because of its native weaknesses but also because of its outsized importance when it comes to awards, bar-stool debates and the like. The primary problem with RBI is that it's highly, highly team-dependent. After all, it's hard to drive in many runs unless runners are getting on base in front of you, and that's not something you can control. Additionally, it's highly dependent upon your spot in the lineup. Take the exact same two hitters, put one in the leadoff spot and one at clean-up and you're going to get vastly different RBI totals. Like any traditional counting stat it's useful at the margins (e.g., it's hard to drive in 130 runs and somehow suck, but it's entirely possible to plate 100 runs and not be a useful player). Mostly, if you feel compelled to pay attention to RBI, don't do so without also paying attention to RBI percentage, or the percentage of runners than a batter plated. You can't consider RBI without also considering opportunities for RBI. - Perry
Fossil evidence indicates that early humans hunted and ate other animals, and this seems to suggest that our catching and throwing capabilities may well be rooted in our development as hunters and tool users. Hitting or catching a moving animal requires an ability to estimate its path in advance. These are the basic skills required for every game of catch and throw, but for our ancestors, they may have been requirements for survival.

A few reactions are fast because they skip the brain altogether--the knee-jerk reflex, for example, requiring only a few nerve-cell-to-nerve-cell interconnections, and thus happens in "the blink of an eye." The neural pathway makes a short loop from sensory cells through interneurons to motor nerve cells, which control the appropriate muscle groups. A message is sent to the brain at the same time it is sent to the muscles, so we actually become aware of the knee jerk as it happens.
As stated, to hit a baseball with power, the batter's swing must stay connected to the powerful muscle groups. However, far too many batters are taught mechanics that use the arms rather than rotation to initiate the acceleration of the hands and bat. Using the arms to fire the hands ahead of rotation disconnects the swing from the larger muscles and hitting with maximum power is lost.

The only reason Carter's swinging strike rate isn't the highest in the league is that he's a relatively patient guy who sees a lot of pitches, otherwise he'd have the clean sweep. Although Chris Carter's actual career batting average is not unfathomably low at .220, it's pretty clear that his ability to make contact is the worst around. Additionally, Carter may have enjoyed more than his fair share of luck on balls in play because his career.294 BABIP seems a little steep for a guy with a batted ball profile like the one shown below: