Alex Torres and the First Protective Pitching Cap in MLB
Alex Torres wore an approved protective cap for San Diego on June 21, 2014. The exact game and the distinction from his later Mets design.

Alex Torres became the first pitcher to wear an approved protective cap in a Major League Baseball game on June 21, 2014. He entered in the eighth inning for the San Diego Padres against the Los Angeles Dodgers, according to Guinness World Records.
The distinction is specific to MLB. It does not establish who first used protective headgear in every amateur, professional or international form of baseball.
The contemporary Pitcher’s Helmet account
The original Pitcher’s Helmet article, published July 1, 2014 under Amanda Dilworth’s byline, described Torres wearing the cap during a late-June relief appearance. It also recorded the reaction to its unusual size, including a comparison with the video-game character Luigi.
That account preserves the contemporary discussion around a visible change in pitching equipment. Guinness supplies the exact game date and opponent, allowing the milestone to be stated more precisely than the archived report alone.
MLB’s June 22 report also identifies Torres’s appearance as the first use of the approved protective hat in the majors.
A different design followed
Torres later debuted a lighter, two-piece design with the Mets in April 2015.
That was a subsequent equipment milestone. It should not replace June 21, 2014 as the date of his first MLB appearance in a protective cap.