Hitting .400 really is the most difficult season-long accomplishment in sports.
Mike Trout getting off to such a hot start has me thinking about how hard it is to hit .400.
Trout is without a doubt the best player in the game. His career best BA to date is .326.
Barry Bonds is considered by many to be the greatest modern player ever (juice or not) and even at his peak he only hit .370.
To be clear, you don't need a super high batting average to be a great player. Hitting for power matters more.
But the sheer difficulty of getting hits nearly every day for 6 months is amazing.
I can't think of any season-long achievement that even comes close to this.
Even the Triple Crown was achieved Miguel Cabrera in 2012. The .400 mark hasn't been done since Ted Williams in 1941 and it really might not happen again.
The only close calls in the last few decades that I can think of are:
George Brett in 1980 hit .390. Brett was hitting .401 as of September 4, 1980!!
Paul O'Neill was hitting .400 as late as June 16 in 1994.
Tony Gwynn hit .394 also in 1994. And he seemed to be heating up as the strike happened. But he wasn't actually above .400 after May 15, 1994.
Just a crazy achievement if it ever happens.