Richardson told media members that Shildt was looking for someone in the Giants' dugout ... and when he asked who he wanted, Shildt got snippy.
"At this time, he's walking toward our dugout," Richardson said of Shildt. "And then he says, 'Hey. I was looking for Alex Wood.'"
Richardson says the exchange of words got so heated, SF manager Gabe Kapler came over to defuse the situation. Then, that's when he claims Shildt unleashed a comment that he believed dripped with "undertones of racism."
"He yelled, 'You need to control that motherf***er,'" Richardson said.