The image of Berra as a lovable lowbrow is overblown. He was a smart ballplayer, at least from the aspect of instincts. Tommy Henrich once called Berra the smartest baserunner on the team after Mantle. And Yogi was a good hit-and-run man and of course he helped handle those great Yankee pitching staffs, which were consistently shuttling parts in and out year after year, still winning 95-100 games annually.
There’s probably some reason for this, though I don’t know what it is: Berra hit better in the second half of the season than he did the first. Most catchers wear down, but Yogi had a career OPS of .802 in the first-half and .858 after the All-Star break.