When hit by a pitch, dont rub the mark.

Lou Brock and Sandy Koufax


We think of Sandy Koufax, he of the hissing fastball and a curve that changed directions abruptly. He also would throw at a hitter, such as the day Lou Brock of the St. Louis Cardinals walked, stole second and third, and scored on a flyball.


Watching Brock do it, Koufax's teammate and fellow pitcher Don Drysdale said to infielder Jim Lefebvre, "Frenchy, I feel sorry for that man."


"Who?" Lefebvre said.


"Brock. Sandy doesn't appreciate that sort of thing. Sandy gets mad enough when you beat him with base hits. But when you score runs without hits, look out."


Next time up, Brock went down, hit in the back by a fastball. "You could hear the thud all over the stadium," Drysdale said. "Brock trotted toward first base, not rubbing, pretending he wasn't hurt. But he never made it. Brock just collapsed, and they had to carry him off on a stretcher."  - Dave Kindred

General Theory

This one is all about intimidation or lack thereof. It's a hitter's way of telling the pitcher that his best shot — intentional or otherwise —didn't hurt. Pete Rose made a point of sprinting to first base after being hit, to ensure that he stripped all satisfaction from the pitcher.
"It's a macho thing, like a fighter who gets clocked in the mouth and shakes his head like it didn't hurt him," said RichDonnelly. "But believe me, it hurts."
Lou Brock was the only hitter Sandy Koufax ever threw at intentionally, and despite the fact that his shoulder was fractured by the pitch, forcing him from the game, never once did he rub the spot. The Washington Post once reported that Don Baylor "was hit by 267 pitches yet never rubbed, even once. Of course, several of the balls had to be hospitalized."    -- Jason Turbow