Los Angeles Chargers' Quentin Johnston is insistent that he can do better as an NFL player.

The 22-year-old wide receiver had a relatively average rookie season after being selected by his team at the 21st spot. He was the second WR to be picked in the selection.

He is entering his sophomore year with higher expectations, as veteran wide receivers Mike Williams and Keenan Allen have both left the team.

Johnston is aware of the pressure, and he is working hard to be in a position to deliver for the team.

Under new WR coach Sanjay Lal, he is first adapting a new playing style and changing his mindset.

Lal knows of the ghosts that haunt Johnston, specifically when he dropped the ball for what could have been a score-tying field goal against the Green Bay Packers in Week 11.

Johnston called that play unacceptable and is now more about keeping his focus on pressure-packed plays.

"Instead of being on the quarterback's time," Johnston said, "I was trying to rush it and be on my time.

Lal training Johnston like DK Metcalf

Lal is changing the way Johnton approaches the game.

He is now training the Chargers sophomore like the way he trained DK Metcalf so that he can maximize his legs and perform under pressure.

"He's got a lot of juice. He almost bounds when he runs," Lal said of Johnston.

"Working on his body positioning is one of the biggest things we've done. He's improved some of his stop-type routes, like keeping his shoulders over his feet longer and not looking early. That's a big jump he's made so far."