The Pittsburgh Steelers have had three rookies play meaningful snaps on the offensive line this season. First-round pick Troy Fautanu was expected to be a starter throughout this season before suffering a knee injury early in the campaign. That said, Zach Frazier and Mason McCormick have been terrific up front. Frazier has been a godsend at center, especially compared to what Mason Cole gave them over the last two seasons, and McCormick has done a great job of replacing the injured James Daniels. While speaking to the media, offensive coordinator Arthur Smith was asked about the growth of the young unit, and how it has helped their offense expand.