0 of 32

Matt Rourke/Associated Press

After months of preparation on their part and hype from everyone else, NFL rookies finally had the opportunity to take the field for live game action this past week as the league had its first of four full slates of preseason games for all 32 teams.

While the box scores of preseason outings are ultimately meaningless and forgettable, the games constitute important experience for young players, especially rookies. As such, a majority of the 2015 NFL draft’s top picks—including No. 1 overall pick Jameis Winston and No. 2 overall pick Marcus Mariota—received a significant portion of playing time in Week 1.

Eight first-round picks were unable to play in their preseason openers because of injuries. We have graded the other 24 based on how well (or not well) they performed within their allotments of snaps in Week 1.

Not all 24 of those rookies had equal opportunities in Week 1—some played only two or three series with first-team units, while others worked with second-team units but saw more extensive playing time.

For the purposes of this slideshow, we graded each player only on the plays he did or did not make while he was on the field during his first preseason game. We did not grade players on how much playing time they received or what competition they went up against.