Padres reliever Alex Torres became the first MLB pitcher to wear a protective cap during last night's game against the Dodgers. The hat was very noticeable.
The padded caps have been available to pitchers all season, but no one had actually worn one until Torres. Yes, it's a big, unaesthetic hat, but its purpose is to reduce the harm of line drives to the head, not make pitchers look cool.
Here's a photo of the inside:
You can watch Torres in action below, though you will likely be underwhelmed. The hat doesn't make a difference in terms of his pitching, which is good: