It was perfect coverage from Pittsburgh Steelers cornerback Patrick Peterson on San Francisco 49ers wide receiver Brandon Aiyuk.
Until it wasn’t.
Second and 12 from the Pittsburgh 19-yard line, 13:30 left in the second quarter and the Steelers seemingly in position to win the series and hold San Francisco to a field goal attempt. Then, San Francisco quarterback Brock Purdy dropped a dime to Aiyuk with Peterson in tight coverage, giving San Francisco a 17-0 lead that all but put the game away.
It was a remarkable throw. Turns out, it was the “most improbable” throw of Week One, too.