This is true. Batting average can be very deceiving. Alex Sanchez batting .320 is not the same as Albert Pujols batting .320. Sanchez has no power, and never walks. OBP is the least understood and most underappreciated stat in baseball. Slugging average and OBP are the two most predictive stats as far as scoring runs are concerned for a team. OPS is simply the addition of the two. To fully understand the importance of OBP, think of it as inverse out percentage. If you have an OBP of .400, the batter has a 60% chance of getting out when he steps to the plate. Say this batter is only a .250 hitter batting average-wise (think Rickey Henderson in his last years). He still will only get out 60% of the time. Now take someone like Sanchez, who would hit .300 regularly, but he would never get on base any other way aside from hitting singles. So his OBP would be close to his batting average, which is .300. This makes Sanchez' out percentage 70%, or a full 10% higher than the .250 hitter. The fastest way to kill a rally or end an inning is by making outs. If you have people that get on base and don't produce an out, your other hitters have one more chance to get a big hit and drive in a run. Plus there is someone on base when they do it. Take a typical first inning for a team. Let's say they have Juan Pierre batting .300 leading off. A speedy guy that rarely walks or gets extra base hits. And they have the typical "grinder" 2 hole hitter, like David Eckstein. He bats about .290, but doesn't hit many extra base hits, and doesn't walk all that much because he never hits any home runs, so there is no reason for opposing pitchers to pitch around him. While Pierre may be the "typical" leadoff man with speed, a decent batting average, and the ability to tear up the basepaths, he really isn't all that good at getting on base in the first place (especially if you consider the last 2.5 years). In other words, he is pretty good at turning at bats into outs, and allowing the next batter to come up with less chances to produce runs. As soon as there is one out, a double play ends an inning, and as soon as there are two outs, a sacrifice will not score a run. He then turns the inning over to David Eckstein with one out. Eckstein is farily good at getting to first base, but not so good at getting beyond that by himself. He lacks the ability to get an extra base hit. So maybe he singles. Now the third hitter is up with one out already and a runner on first. Even a single won't score the run, a double play will end the inning, and nothing is going to happen with a sacrifice. Basically, you need an extra base hit to score the run. The "traditional" baseball lineup is oftentimes constructed like this. The speedy leadoff guy gets on base, maybe steals second, the "grinder" 2-hole hitter moves him over with a groundout to second, and the best hitter drives him in. But this is an ideal situation, one that happens far less often than not. This is really an imaginary situation. Even the best leadoff hitters make outs more than they get on base. Leadoff hitters like Juan Pierre make outs more frequently than even the average major leaguer. And players like Eckstein may take a walk or get a single, but a single means you need an extra base hit or two more singles to score, therefore decreasing your team's chances of scoring period. Lineups that score the most runs don't necessarily have speedy guys batting leadoff, they have guys that don't get out. OBP measures how often you don't get out. SLG measures how often you allow yourself to be driven in by only one subesquent base hit rather than two, and your ability to drive guys in from first base, the most frequently occupied base in the game. Rickey Henderson wasn't the best leadoff man in the history of baseball because of his speed, he was the best leadoff guy because he rarely got out. His career OBP is a whopping .401. He stole so many bases because he gave himself so many opportunities by getting on base. Pierre will never get as many stolen bases as Rickey because he simply lacks the ability to get on base in the first place. Now take a lineup constructed for maximum run production. Instead of getting out, your leadoff hitter with a .420 OBP actually gets on base. You have a guy who can actually hit doubles and home runs batting second, so you can drive the leadoff guy in from first with one hit. Stringing together multiple hits is a hard thing in baseball, especially when even the very best hitters get out more often than they get a hit. But even if this guy only walks, your third hitter gets up with no out and two guys on base, instead of one out and a guy only on first. No, these scenarios won't happen like this all the time. But the higher your OBP, the less chance your hitters have of producing a rally-killing out. So over the course of the season, your team will make outs at a slower rate, and thereby extending innings. And instead of having three or four batters up per inning, you will have 4 or 5. It's like buying an extra lottery ticket every time your team comes to bat. Because the more at bats you get, the more chances someone has per inning of driving in runs. And of course, the more you wear the opposing starting pitcher out and get to the usually weaker bullpen. And the higher your SLG, the higher chances you have that that an average of one hit per inning will drive in runs. Therefore, knowing a team's and a player's OPS tells you a hell of a lot more about how many runs their offense will score as opposed to using their batting average. Computer simulations back this up. Regression analyses of past data back this up. OPS isn't perfect, because from a pure correlational standpoint, I think that OBP is more correlated with scoring runs than SLG, but it's good to have high numbers of both. Batting average only tells you a fraction of the picture. I'll take a team full of Russel Branyans any day over a team full of Alex Sanchez. The All Sanchez team will bat over .300, the All Branyan team will bat .230, but the Branyan team will score a ton more runs. And that's not even considering the fielding errors and the baserunning blunders on the former team http://forum.brewerfan.net/images/smilies/wink.gif