The Ravens didn't expect Matt Schaub to be perfect in relief of an injured Joe Flacco. He hadn't started a game in 23 months, and his last extensive playing time for the Houston Texans in 2013 was characterized by him having interceptions returned for touchdowns in four straight games.
They simply wanted the 34-year-old to limit his mistakes and make plays when the Ravens needed them to be made.
On a chilly night in Cleveland, the Ravens got the whole Schaub experience, and it appeared that the quarterback's final mistake, coupled by the latest inexplicable late-game defensive meltdown, would cost the Ravens the game.