After a long layoff because of injury, Indianapolis Colts quarterback Andrew Luck came back last year and took the NFL by storm again. One Pro Football Focus stat released on Monday shows just how impressive of a season it was for Luck.

According to PFF, Luck had an adjusted completion rate on third down of 73.7 percent, which was good enough for eighth best in the NFL.

According to Pro Football Focus's Mike Clay, the following formula is used to calculate adjusted completion percentage.

Adjusted Completion Percentage = (Completions + Drops) / (Pass Attempts – Spikes – Throwaways – Batted Balls – Balls disrupted by a QB hit)

Adjusted completion percentage tries to give a more true completion percentage taking away items that the quarterback can't control like drops and spiking the ball.

True completion percentage is still an important stat, but the adjusted completion percentage might actually be a better indication of how a quarterback is performing.

Last season, Luck threw for 4,593 yards and 39 touchdowns while completing 67.3 percent of his passes. His career average is just over 60 percent so his completion percentage is improving.

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The expectations are high against for Luck and the Colts heading into the 2019 season and Adam Schein of NFL.com ranks him as one the favorites to win this years MVP.

“Don't let Luck's calf injury — which will limit him during offseason workouts — fool you. We can believe Luck when he says he'll ‘be ready for training camp.’”

“And Luck is one of the five best quarterbacks in the NFL. He makes everyone around him better. After shoulder issues cost him all of 2017, Luck came back last season and put together one of his best campaigns as a pro, throwing for 4,593 yards (fifth most in the NFL) and 39 touchdown passes (second most) while shepherding Indy from a 1-5 start to a playoff berth. And he's the reason the Colts can be Super Bowl-bound this season.”

If Luck wants to win the MVP and help the Colts have a successful season, it's going to be key that he has a high completion percentage.