Answer based on context:

The Ravens stayed at home for a matchup against the Raiders who never won at Baltimore. Unfortunately the Ravens could not hold on to the lead after Derek Carr found Michael Crabtree in the end zone near the end of the game. Baltimore began driving down the field but the drive stalled allowing the Raiders to win at Baltimore for the first time in history dropping the Ravens 3-1. With the Steelers win, the Ravens dropped to second place in the AFC North

How many completions did Derek Carr have?
1