This is a bet on the Quarterback's passing yards multiplied by the total number of touchdowns he passes for.
E.g. A bet on OVER 300 means that if he passes for 200 yards and scores 2 touchdowns (400 Total), you win 100 times your stake (i.e. a $10 stake will return $1000). Max win/loss is capped at 1000 times your stake.
*Final result includes overtime. Market resulted off ESPN.com's Box Score. All bets are void if the named starting QB does not start for the team.