K% is a big flaw in wOBA - sorry, but Adam Dunn did not have more offensive value than Joe Mauer last year when he struck out 3.5 times as often (not to mention Mauer had an avg over .060 higher).First off no it really isn't a big flaw at all, a strike out is barely less valuable than any other out, it is a marginal difference at best. But more importantly you harped on Ortiz's 28% and compared it to Fielder who had a 23% last year, there is no way 5% K rate changes the value significantly. The flaws in wOBA is mostly going to come from baserunning. To take it a step further looking at linear weights, a normal out on average is worse than a K with a runner on 1B and the same with nobody on which are the two most common situations to be in. Overall the weight of a K is -.31 and a normal out is -.30. So if one guy strikes out 100 times more than another guy he cost himself roughly 1 run of value on the season or 10% of one win in value. Strike outs are bad because you aren't putting a ball in play, but when you are looking at just results a strike out on average is barely worse than any other out you can make.