Sadly, the refs kept this one closer than it really should have been.
Screenshots show that Lacy crossed the goal line on the drive that ended with the INT in the end zone. Alabama lost 7 on a bad call.
Georgia's blocked FG came about because of another bad call by the refs on the previous play where UGA's obvious PI was not called due to the "tip" that apparently had no impact on the ball at all.
That alone is a 14 point swing, not to mention the PI would've put Alabama well into UGA territory.
39-21 or 46/42-21 would've been a better indicator of how the game actually went, but oh well.