If fantasy football was 100% skill, then the best owner in any given league would have a 100% lifetime winning percentage, and the worst owner would have a 0% lifetime winning percentage.If fantasy football was 100% luck, then the best owner in any given league would have a 50% lifetime winning percentage, and the worst owner would have a 50% lifetime winning percentage.Obviously, fantasy football is neither 100% skill nor 100% luck. How much of it is luck? Well, in one of my leagues (that's been around about a decade), the owner with the highest lifetime winning percentage has a 60% winning percentage, and the owner with the lowest lifetime winning percentage has a 40% winning percentage. I'd say that that's a pretty good illustration of how luck plays a far bigger role in fantasy football than anyone wants to acknowledge.