I can’t confirm this with absolute certainty, but I’ve done what I can to research it, and to the best of my ability to determine, Chase Claypool’s 84-yard touchdown yesterday went down in the Pittsburgh Steelers’ record books as the second-longest first scrimmage touchdown in team history, and the longest first scrimmage touchdown by a rookie. It wasn’t the longest scrimmage touchdown by a rookie. It wasn’t the longest first touchdown. But I don’t believe anybody in a Steelers uniform has ever recorded a longer touchdown as their first score from scrimmage.
Aside from Mark Malone, who caught a 90-yard touchdown from Terry Bradshaw in Week 10 of the 1981 season, the year after he was drafted.