Watch: Mo Gaba Announces Ravens' Draft Pick in Braille

Gaba, who's battling cancer, will become the first person to ever announce an NFL draft pick off a card written in Braille.

Draft day proved particularly historic for the Baltimore Ravens this year.

Mo Gaba, a 13-year-old fan of the team, announced Baltimore's fourth-round pick off a card written in Braille. He became the first person to ever do so.

Gaba, who's battling cancer, announced the selection from the Ravens' Draft Fest on Saturday. Baltimore selected Oklahoma guard Ben Powers with the No. 123 pick.

According to ESPN, Gaba lost his sight when he was nine months old. The Ravens shared a heartwarming video on Wednesday featuring coach John Harbaugh surprising him with the invitation while Gaba was on with a local radio show.