quote] I'm not taking walks out of OBP. What I am doing is separating OBP into the two primary components: batting average, and walks. HBP and a couple other things figure in, but those things are too rare to truly make a significant difference. Now why does OBP correlate decently with runs? Is it because of the batting average part, or the walks? The stats clearly show that differences in batting average are the primary reason why some teams score more runs then others. An increase in walks do cause an increase in runs generally, but this link is much more fragile then differences in batting average. The evidence clearly shows that if you had to have a team that was in the top 10 team in batting average or the top 10 in walks, you would clearly take the top 10 in batting average. Of course, it would be even better to take one of the top 10 teams in OBP, because it takes the large effect of batting average and adds the small effect of walks. Do walks matter? Yes. However, you want the team with a .360 OBP and a .284 average rather then the same team with a .360 OBP and a .271 average. You are going to get many more runs out of the first team than the second team on average, even though the second team walks many more times on average.OPS has such a direct correlation with runs scored because it gives walks it's place while essentially double counting hits-because a hit both adds to your OBP, and also increases your slugging. So a hit is definitely worth a great deal more than a walk, and the OPS numbers show this. Not necessarily true. If the team hitting .284 is slugging 30 points lower than the team with the .271 avg., they will probably score less runs, so that completely shoots your average argument down, while reinforcing your OPS argument. Bottom line is you want a high OPS, and how you get there is less important than the fact that you get there.