NASHVILLE, Tenn. -- The Tennessee Titans were one of the most talked-about teams on draft day as they grabbed two exciting playmakers with their first-round picks. Fast forward to January and cornerback Adoree' Jackson has proven himself as a rapidly progressing and effective starting cornerback/returner. The Titans' top pick, receiver Corey Davis, has been a symbol for most of the rest of the draft class -- a bit underwhelming and a season of untapped potential. It will be an important 2018 offseason for Davis, receiver Taywan Taylor and tight end Jonnu Smith as they try to find their roles in the Titans' offense. The good news for them is there's plenty of time left to figure it out.

Grade: Average.

Best rookie: The knock on Jackson coming out of college was that he was an undersized and would take some time to develop into a starting-caliber cornerback. He has taken some lumps this season, but he has improved steadily to form a solid starting cornerback duo with veteran Logan Ryan. Jackson allowed only 28.6 percent of contested passes to be caught, fifth highest in the NFL per Pro Football Focus, while playing the second most snaps among all NFL players. He also showed flashes as a dangerous returner.

Most improved rookie: It's probably Jackson again here, but let's go for a different name in linebacker Jayon Brown. The Titans' fifth-round pick has earned somewhat of a timeshare at linebacker with Avery Williamson, primarily due to his ability to cover tight ends and running backs. Offenses hurt the Titans quite a bit over the middle in 2016, but Brown helped minimize that damage in his solid 2017 season.

Most disappointing rookie: It has to be Davis considering the expectations that he could be the Titans' No. 1 receiver as a rookie. He finished with 34 catches, 375 yards and no touchdowns. A lot of Davis' lackluster numbers are due to injuries that caused him to miss most of the preseason and five games. He looked behind when he returned to action and has made some rookie mistakes including route precision struggles. He also belongs in this next category because he has shown flashes of his talent and it's way too early to give up on him.

Jury is still out on ...: Taylor, who looked to be the Titans' much-needed speed and big-play receiver early in the season when Davis was out of action. His snaps dramatically decreased late in the season, partially because of some route-running and scheme mistakes. The Titans coaches fell back to using Taylor as a gimmick player when he has potential as a true receiver. Taylor finished with 231 receiving yards and a touchdown, but he had only three catches for 23 yards over the final seven games as his role diminished.

Undrafted rookie evaluation: The Titans have no undrafted rookies on their 53-man roster, and none played much of a role throughout the 2017 season.