These are important because they show you how often (on average) a player walks and strikes out. Unlike batting average, K% and BB% are given in a direct percentage format, so there’s no need to translate it. The application of these stats is pretty straightforward; a player with a high BB% and low K% would typically have a good batting eye, and a player with opposite-type numbers would typically have a poor batting eye.
My intention here is not to criticize Leyland, nor is it to promote sabermetrics as a healthy lifestyle for all baseball fans. I’d just like to share the location of a very comfortable place that I’ve found in the world of statistics, that has a pretty good overall viewpoint and doesn’t make me dizzy when folks start speaking in saber. I’d also like to make this a place that even a casual baseball fan, one that is intimidated by "advanced metrics" can get to rather easily, without getting queazy. It’s really not a steep climb.
This new formula, which they referred to as gOBP, both credits the batter for reaching on errors and penalizes the batter for sacrifice bunts. They argue first, that any baserunner gives his team a chance to score, regardless how he reached base; second, that the batter can influence whether a batted ball becomes an error*; and third, that if HBPs (which are basically mistakes by the pitcher) are counted as positive events in OBP, then errors (mistakes by the fielders) should as well. To support these arguments, they show that team gOBP correlates better with runs per game (R/G) than the traditional team OBP.
These types of movements encourage poor technique and motor patterns. I have talked about the central nervous systems relationship with movement patterns in the past with speed development and in baseball youth athletes, the same rules apply here. This type of training negatively affects your body’s motor/muscle recruitment patterns during a game setting.
The other statistic I wanted to mention that sort of goes hand-in-hand with slugging percentage is isolated power, or ISO for short. This is calculated by subtracting batting average from slugging percentage (SLG-AVG) to give you how many extra bases a player averaged per at bat. ISO is important because it removes singles from the equation to give you a better idea of a player’s true power capability.

The longest delays probably involve the nerve cells that make the decision to swing. These decision-making cells receive their input from the eye by way of the brain's visual cortex. It takes at least 43 thousandths of a second for information about the velocity and trajectory of the baseball to be sent from the retina to the higher visual cortex. What happens during the actual "decision" is a neurological mystery — but once the decision is made, a signal is sent to the cerebellum initiating a series of pre-programmed, reflex-like actions (for a practiced batter).
Carter came to the Astros from Oakland as a player with a reputation for excellent power, but a scary tendency to swing and miss. In his first full season in the majors last year he did nothing to shake that reputation. Carter hit 29 home runs in 2013, but also struck out 212 times coming with in striking distance of Mark Reynolds single-season record of 223. In the last two years (among hitters with at least 800 PA) Chris Carter has been at the top of the leaderboards in all of the statistics related to failing to make contact with baseballs. The following chart shows his numbers in K%, Contact% and Swinging Strike % and where he ranks among the 190 batters with 800+ PA over the last two seasons:
Phase 1 of the swing is by far and away the most important phase. It is at this point where the hitter will either be all they can be or something less than that.  Not to say you can’t still get a “hit” but as we say all the time, “your worst mistake is your first mistake”. This basically means, when you make mistakes early in the swing(phase 1), 100 percent swing efficiency can not be reached.  Here is where early in the swing resides and where  the effortless swing can be achieved. In Phase 1, there are two main objectives.

Adjusted ERA+ Base runs Batting average on balls in play Batting park factor Catcher's ERA Defensive Runs Saved Extrapolated Runs Game score Isolated Power Range factor Runs created Runs produced Secondary average Speed Score NERD Out of zone plays made Ultimate zone rating Value over replacement player Weighted on-base average Wins Above Replacement Win probability added Win Shares
If perhaps you are a larger player with more height and/or weight, you do not need as much movement to generate the force needed to be successful. Having said that, even if you do have size at a young age, it is still important to learn that you can move more if you want and therefore hit the ball harder. Guys like Albert Pujols don’t move forward much but definitely still move forward some.
Josh Donaldson hit .255 and scored 93 runs; think some of those 76 walks helped him out?  Brandon Moss was the man to own in the first half even with a .268 BA, but was dropped like a rock in the second half where he hit .173.  His OBP slipped from .349 down to .310, but at least he was still playable thanks in part to 14.8% walk rate.  Adam Dun hit .219 in 2013 and while he hit 34, owners cursed him.  Forget the 76 walks and .320 OBP though, it doesn’t count in fantasy.  In 2012 Dunn hit 41 home runs and scored 87 times, but a .204 batting average had him on America’s most hated list.  Using OBP you could have had .333 thanks in part to his 105 walks which batting average didn’t take into consideration.  Dunn’s value in 2012 using OBP was slightly above Adam Jones and his 34 walks.  Dunn had 71 more walks and Jones had 76 more hits, similar results but Jones is rewarded for being on base an equal amount of times. 
While hitting for a high batting average does not exclude hitting for power, the most successful batters with the highest averages are very good at situational hitting. This means that they can identify gaps in defensive coverage or anticipate pitches better, giving them more of an advantage at the plate. A typical player with a high batting average is patient at the plate and can hit the ball effectively to both sides of the field.