Chargers’ Ladd McConkey can finally learn from Keenan Allen in person

Even before Keenan Allen returned to the Chargers last week, he was already having an influence in the receiver room.

As a rookie, Ladd McConkey studied Allen’s practice film on his team-issued iPad, trying to absorb lessons from one of the league’s best route runners — the very player whose rookie records for receptions and receiving yards McConkey would eventually surpass.

“You sit in team meetings, pull up your iPad and just watch,” McConkey said. “Watching his one-on-one stuff from previous years, when he was here. I’m going to check this out, see what he’s got.”

Now, the 33-year-old Allen and 23-year-old McConkey are inseparable on the field. Throughout practice, McConkey picks the veteran’s brain — something he says “would be dumb if I didn’t.”

“He’s been doing it at a high level for a long time, so any knowledge I can get, I’m going to take it,” McConkey said. “He’s very decisive and smart… He knows how to win using leverage. He doesn’t just run past you — he can set you up at the top, stick and he has great hands.”

The prospect of the two playing in the same offense excites McConkey, who says any doubts about their chemistry can be set aside because “in this offense, we can all move around.”

“We can all rotate in different positions and scheme it up the way they want,” McConkey added. “That’s something that’s really good about our receivers, and we’re all very versatile.”

It was the first day the two were able to participate in the same 11-on-11 session, with McConkey returning from an undisclosed injury that sidelined him for several practices and Allen just coming back last week.

Offensive coordinator Greg Roman said Allen’s presence has already made a difference, noting, “We always knew he was a great player, but now that he’s here, he’s proven it once again… Keenan creates flexibility for us and also makes us stronger.”

“Our training staff is doing a great job acclimating him, getting him up to speed,” Roman said. “We’re taking it slow, in a gradual manner… Getting into football shape.”

Running back rotation

At times last season, when healthy, the Chargers rotated as many as three-deep at running back.

With Najee Harris — expected back at some point — and first-round pick Omarion Hampton projected to handle the bulk of the carries, there’s still an opening for a third back in Roman’s system.

With Hampton sitting out Sunday’s preseason game against the New Orleans Saints, plenty of reps were up for grabs. Roman called it a “wide-open competition.”

“There’ll definitely be a rotation no matter what happens,” Roman said. “We’ll try to keep guys fresh throughout the game. I think the days of one running back taking every rep are going the way of prehistoric creatures.”

That leaves the spot up for grabs between second-year back Kimani Vidal — who started Sunday and finished with six carries for 16 yards — and undrafted rookie Raheim Sanders, who had 10 carries for 42 yards and a touchdown.

“He [Sanders] did a great job, kind of created some things on his own,” Sanders said. “Leaned on the defense in the fourth quarter… A lot of it [drive] was him pounding the rock. He did a really nice job for his first game.”

Sanders faces an uphill climb, though. Vidal is coming off a rookie season in which he worked his way from a fringe roster hopeful to contributor, making the 53-man roster and appearing in 10 games.

At practice, the two continue to fight for a good share of reps, with Hassan Haskins mixed in.

Etc…

Quarterback Trey Lance sat out full-team drills Tuesday, which Roman said was simply a rest day after Lance played most of Sunday’s game — stressing it was not injury-related… Guard Mekhi Becton has now missed two full weeks of practice as he continues to “work through something.”