[CommerceComet]

Brett, Gwynn, and Ichiro were the last guys who had a shot.

Rod Carew had a .388 season in 1977 where he flirted with the .400 mark a lot of the season. If eight of his ABs would have resulted in a hit rather than being ruled an error, or having the fielder make a great play, or would have been called safe on a bang-bang play at first, he would have hit .401.

Mike Trout will not hit .400 but he is probably the best combination of skill and athleticism since Mantle. Like Mantle, Trout has charisma. I'm obviously biased but if the Mick would have taken care of himself and had access to today's medical technology, he would probably hold just about every power hitting record there is.

[Theoria]

Yes. It's hard to compare past greats with today. Today is a different game. Size of players today. More international talent. Cutting edge tech. Smaller fields. Pitching alone is different. In Mantles time, they usually didn't face many different pitchers in the same game! So many guys would just pitch on thru, +150 pitch counts were the norm.