Desmond King's tenacity highlights Chargers' rookie class

Fifth-round pick Desmond King has been the Chargers' most productive rookie so far this season, playing primarily as the team's slot cornerback. Jim Rogash/Getty Images

Here's a look at the first-half impact of the Los Angeles Chargers' 2017 draft class:

Mike Williams, WR, first round: After being out since May with a lower back disc herniation, the Clemson product has appeared in just three games, playing a total of 43 snaps and finishing the first half of the season with two receptions for 22 receiving yards on six targets. The Chargers hope to get Williams more involved in the season's second half as he gets more comfortable in the offense. Grade: Incomplete.

Forrest Lamp, OL, second round: Projected to compete for the starting spot at right guard, Lamp suffered a torn ACL in his right knee on the fourth day of training camp that required surgery. Lamp is back at the Chargers' facility and rehabbing for a return to the field in 2018. Grade: Incomplete.

Dan Feeney, OL, third round: Feeney made his first career start in place of an injured Matt Slauson against the New England Patriots in Week 8, and according to Chargers coach Anthony Lynn, the Indiana product held his own. Feeney has played 100 snaps on offense this season. "Dan played well for his first start," Lynn said after the Patriots game. "I think there are things he can improve. There are some things he can do better. But I think, overall, I thought he played well." Grade: Average.

Rayshawn Jenkins, S, fourth round: Jenkins is third on the team in special-teams tackles with eight. However, he also has committed a couple of head-scratching penalties that cost the Chargers field position. Jenkins has played just 12 snaps on defense. Grade: Average.

Desmond King, CB, fifth round: The Iowa product has been the Chargers’ most productive rookie this season while playing 326 defensive snaps, mostly as the Chargers' slot defender. King has 27 combined tackles, a sack and two pass breakups. "Where he’s come along is he’s a pretty good open-field tackler," Chargers defensive coordinator Gus Bradley said. "And that constantly shows up, too, where he's around the ball and he has his opportunity, and he does a pretty good job. We’ve just got to keep pushing him. He's got a lot to learn in a short period of time." Grade: Above average.

Sam Tevi, OL, sixth round: The Utah product has been active for six games this season but has mostly played on special teams. At 6-foot-5 and 315 pounds with good athleticism, Tevi remains an interesting developmental prospect on the back end of the Chargers' roster. Grade: Average.

Isaac Rochell, DL, seventh round: The Notre Dame product made the initial 53-man roster and played in the season opener against the Denver Broncos, finishing with a tackle. However, Rochell was waived the following week and has spent the rest of the season on the practice squad. He showed flashes during training camp and preseason play of being an effective interior pass-rusher. Grade: Incomplete.