Riley got in about 6.5 games worth of game time. Last I checked, 6.5X2=13. Last I checked, there are 13 games including the bowl game. Last I checked, Riley threw for 1,717 yards. Let's see, 1,717X2....carry the one, add the 3.....yada, yada, yada....=3,434 yards.
You must be bad at math.
Okay, let's do it another way. Only Riley's complete games count. Riley started and finished 6 games. In those 6 games, he threw for 1,479 yards, or an average of 246.5 yards/game. 246.5X13=3,204.5. Either way, that's 3,000+yards should Riley stay healthy the entire season. Maybe you don't know BYU football.