"He's a great football player as we know, but he's an even better person. We will support him every step of the way," added Stefanski.
Linebackers TJ Watt and Alex Highsmith scored their first career regular-season touchdowns to secure victory for the Steelers, who bounced back from their opening-game defeat at the hands of the San Francisco 49ers.
In Monday's other game, the New Orleans Saints beat the Carolina Panthers 20-17 at the Bank of America Stadium.
Tony Jones Jr rushed for his first two NFL touchdowns as the Saints moved to 2-0 for the season while the Panthers recorded a second successive defeat.
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