Two more Ohio State freshman lost their black stripes today.

Wide receiver Trevon Grimes and running back Mitch Rossi are the latest Ohio State freshmen to lose their black stripes.

They’re the 13th and 14th Buckeye freshmen to do so this offseason, respectively.

Earlier, the Ohio State football account posted footage of the two athletes receiving the honor, and you can check them out below:

Grimes was a 4-star wide receiver recruit coming out of high school.

Rossi, a walk-on, was a two-way player in high school, where he also played rugby.

⬛️ ? The first walk-on of 2017 to lose a black stripe is @mitch_rossi5! Could not have gotten through camp without you! Keep it up! #GoBucks pic.twitter.com/SQh4wXcv6y — Ohio State Football (@OhioStateFB) August 25, 2017

Pretty cool. But where exactly did the black stripe tradition start?

Per Land of 10:

Urban Meyer created the black stripe tradition when he was at Bowling Green. It’s a the ritual he uses in order to symbolize freshmen players as becoming a part of the team. Players lose their black stripes when they present themselves, on and off the field, in a way coaches find satisfactory.

Here’s an updated list of all the Ohio State players who’ve lost their black stripes this summer:

RB J.K. Dobbins

DB Isaiah Pryor

DE Chase Young

CB Jeffrey Okudah

DT Haskell Garrett

LB Pete Werner

OT Thayor Munford

CB Shaun Wade

S Brandon White

QB Tate Martell

OL Wyatt Davis

DT Jerron Cage

WR Trevon Grimes

RB Mitch Rossi

The Buckeyes kick off their season on Aug. 31 at Indiana.