Arizona's Madison Bumgarner was upset during the frame over some balls and strikes calls ... and when he walked toward the dugout and got checked by an ump for foreign substances -- he had some words for the official.
In footage of the altercation, picked up by broadcast cameras, Bumgarner was seen clearly arguing with the ump -- before he was eventually tossed.
We can't help but notice the creepiness of the ump checking his hands though!!!