While the Pittsburgh Steelers made the prescient move of acquiring additional tackle depth during the 2018 NFL Draft with the third-round selection of Chukwuma Okorafor, it has been another reserve offensive lineman who has started at the tackle position during the two games in which the team has been without one of its starters at the position.
That would be Matt Feiler, an offensive lineman who has been in the NFL in some capacity for five seasons now, but is technically only regarded as a second-year player after serving three seasons on the practice squads of the Houston Texans and Steelers from 2014 to 2016.