Derrick Coleman has helped the Seahawks on the field, and inspired numerous fans off of it.

As the NFL's first legally deaf offensive player -- and soon, the Super Bowl's first legally deaf offensive player -- Seattle Seahawks fullback Derrick Coleman has inspired many during his brief NFL career. Earlier in January, a goosebumps-inducing Duracell commercial featuring Coleman went viral.

@JakeIsMobile Your girls are awesome! Read them my letter back when you can! Thank you for the support! Means a lot! pic.twitter.com/9x5tQQwNbk — Derrick Coleman Jr (@DC2forlife) January 22, 2014

On Tuesday Jake Kovalcik, father of 9-year-old, hearing-impaired twin sisters Riley and Erin Kovalcik, Tweeted a letter his daughters wrote to the groundbreaking athlete:The Kovalciks appeared on "Good Morning America" on Wednesday morning . Not long after receiving the message, Coleman responded with his own letter: