Since almost the beginning of baseball, they have been there, perched atop the domes of American athletes. The hat. The cap. The lid. But it wasn't always thus, and it wasn't always the caps we see on the field today. Special guest Michael Clair (@michaelsclair), of MLB.com, joins Mike and Bill to talk about his recent article, The Long Strange History of the Baseball Cap, and about how ballplayers' oldest accessory (other than the bat itself) was introduced and changed over time.

Plus, happy birthday to Jim Sundberg and Barry Zito!