Yes, Ervin is ranked four, in my opinion, Danny not ranked. WAR is a counting stat, so time on the field counts. And position matters a lot. CF and SS get bonuses for position difficulty, whereas DH gets less. It's why I think Sano has more uncertainty. If he is good at third, he can put up big seasonal numbers. If he is at DH, he will not get as high WAR counts. I should clarify--I am looking for the highest single-season WAR by each of these players.