Adam Shaheen was not used often in 2017. In fact, he was only targeted 14 times as a rookie. That is a very small sample size to take much away from. With that said, I dove into every route Shaheen ran and every play he was targeted on. Here are the takeaways. Keep in mind that everything said is with the idea in mind that the sample size is small and the coaching will change.
Receptions by route
Flare: 4-4 42 yards, 2 TD
Post: 2-3 40 yards
Out: 3-3, 11 yards, TD
Slant 1-1, 16 yards
In 1-1, 12 yards
Cross: 0-1
As shown in his route breakdown, flares and posts were the two most effective uses of Shaheen.