NAPA – The Raiders have a Reception Corps with a new look. Amari Cooper could be the only support that gets snapshots all the time, with newcomers taking on important responsibilities right away.
Jordy Nelson will face Cooper. Martavis Bryant is in the mix, offering rare height and speed in the pattern. Ryan Switzer is the favored man in the slot, a dodgy pass-catcher who works on the interior. Quarterback Derek Carr calls the position group the deepest since arriving in 2014. Cooper believes the group is complete because everyone else brings along the table.
"I think we have a lot of recipients," Cooper said. "We have speed guys, we have guys who have really strong hands ̵
Even men who fought for a roster, like Marcell Ateman, Griff Whalen, Keon Hatcher and Isaac Whitney, had their moments.
They certainly had some Armored Training on Monday
The position group proved unreliable last season, with far too many crashes and missed chances.
The Raiders need better this season from their receivers and should do it with the top four guys. The fight for fifth place will be between Seth Roberts, Johnny Holton, Ateman, Dwyane Harris – he has the ability to return – and others 
Cooper, however, will remain the primary option. That's a role he welcomes.
"That's what you want as a broad receiver," Cooper said. "You want to be the playmaker, you want the ball in these crucial situations, you want to rely on it, you want to count on when it's time to make a big game."
Vadal on the way out  The Raiders are to part with the offensive lineman Vadal Alexander, Gruden told his press conference on Monday
This comes after a strange run for the LSU product and the former swing tackle. He was suspended for four regular season games for breaking the NFL Performance Drug Policy in May, which did not affect his availability in the preseason.
Then he did not come to the training camp and was transferred to the reserve – did not report a list last week. It does not seem like he's returning to the team, though Gruden has not given a reason for his absence.
Rookie Pass-Catchers Falling Off
Undrafted-tight-end Paul Butler had a strong day, with acrobatics catches in individual exercises and two more solid games in team sessions. It will be hard to find a place in his position, but a strong summer could help him gain a place in the training squad.
The seventh-round receiver Marcell Ateman was solid the last few days and came back behind his man Make a nice catch from Derek Carr. Gruden said that Carr changed the game on the scrimmage line and called the rookie number based on coverage, and it worked well.
Richard should be back soon
Raiders run back Jalen Richard suffered on Sunday a calf strain will not miss much time. Gruden said he could be back on Wednesday. This is a relief for a player in a contest for wears behind Marshawn Lynch.
Undrafted rookie runs back Chris Warren is out – he was seen with a wrap on his right quad / hamstring and calf – but could return soon.  The Raiders signed the former University of Iowa, which ran down James Butler, who was immediately thrown into the mix and performed relatively well.
This is the
cornerback Daryl Worley has played well with Conley. Gruden said he worked his way up the depth map. He also compared rookie cornerback Nick Nelson with T.J. Carrie, someone who was able to disguise physically … Several veterans were engaged in team exercises in a physically cushioned workout, including Marshawn Lynch, Jordy Nelson and Breno Giacomini. Bruce Irvin and Reggie Nelson had a smaller workload than normal … Above all, a guard and center, Ian Silberman got a long look at real equipment and often worked there with the first unit … Gruden praised reserve quarterback Connor Cook's improvement in Scheme knowledge and execution, saying the replacement quarterback contest should be tough … Kicker Eddy Pineiro had another strong day and made several deep kicks through lean posts. Gruden said the kick-off competition went through the preseason … Monday's training was a physical one with a lot of good work in progress … Arden Key had another solid day in solitary urgency.