You bring up an interesting question. How much of a difference is needed for OBP to trump SLG pct.? Take Kendall for an example. A low slugging pct. guy on a high slugging pct. team. Might it in some ways be more beneficial to have a high OBP guy hitting in front of a bunch of SLG guys rather than just have one more SLG guy in a long line of SLG guys? On average, a point of OBP is worth somewhere between 1.3-2.0 points of SLG, depending on how you try to estimate it. For a specific batter in a specific lineup position, the value of each is very dependant on the batter before and after him, though. Much of the value of SLG is derived from the movement of players already on base. THe less base runners on, the less value a base hit has. Because Kendall is expected to have such a low SLG, it makes sense to bat him 9th, where the value of SLG is less and the value of OBP is more. From a Dan Fox article at BP: "What makes it work in this case is that Kendall's combination of an adequate OBP and a woeful slugging percentage is not that different from the typical ninth spot hitter in the order. This means that when batting eighth he won't be driving in many of the four-through-seventh place hitters who reach base, but when hitting ninth he gets on base enough to allow Fielder and Braun opportunities to drive him in, resulting in a net offensive gain. It appears the break-even for this strategy as far as the Brewers go is somewhere around Kendall delivering a .360 SLG. That is, if Kendall's slugging percentage were .360 or higher (while delivering the same OBP[he's assuming a .324 OBP...rluz)), it would essentially be a wash as to whether to bat him eighth or ninth." Now, that's not to say that Kendall's low SLG doesn't hurt the Brewers at all; it's just doesn't detract from runs scores as much there as it would somewhere else in the lineup. No matter what lineup spot you are talking about, the lower your OBP or SLG is, the less runs your team will score and the less games they will win. Unless your team wins 162 games, there's no such thing as "enough power".