ALAMEDA — Amari Cooper is on pace for eight more catches and 202 more receiving yards than he had during his rookie season. But because he hasn’t found the end zone, the Raiders’ second-year receiver is considered to have been quiet so far in 2016.

“I couldn’t believe it,” quarterback Derek Carr said of the prospect of Cooper not having a touchdown through four games. “I was thinking about the games and wow, that’s true.”

Cooper leads the team with 318 receiving yards and a 15.9 yards per reception average. He’s second with 20 catches. But Carr’s nine touchdowns have gone mostly to Michael Crabtree (four) and Seth Roberts (three), with Andre Holmes and tight end Clive Walford also catching one.

“It’s not frustrating,” Cooper said. “Obviously you want to score every game but you just have to be patient.”

Cooper’s rookie season of 72 catches, 1,070 yards and six touchdowns has naturally generated plenty of extra attention his way from defenses. While Crabtree is on his way to a potential career season, he doesn’t have the same speed and breakaway ability as Cooper, a true home run threat. That’s contributed to him staying out of the end zone.

“Atlanta was playing soft coverage,” Carr said of the Raiders’ Week 2 opponent, “taking him away, trying to do those things and certain other aspects of coverages that people do towards him. I mean, he’s going to get special attention and he knows that and he’s learning that as we keep going.”

Cooper easily could’ve found the end zone in Week 3 against Tennessee when he blew past the coverage, but Carr’s pass had too much on it and sailed long.

After Crabtree’s huge outing Sunday, in which he caught a career-high three touchdowns, there’s a chance teams may start shifting their focus and that could help Cooper.

“Possibly,” Cooper said. “If they key on him, then it’ll leave room for me to go against other team’s second-best corner.”

Carr isn’t worried about Cooper, who despite the lack of touchdowns is on pace for an 80-catch, 1,272-yard season.

“It’ll be just a matter of time,” Carr said. “He’ll get back in there. That’s what he does for a living.”