ORCHARD PARK Eddie Vanderdoes Jersey , N.Y. (AP) — Buffalo’s quarterback competition is now down to two after the Bills traded veteran AJ McCarron to the Oakland Raiders.The Bills received a fifth-round pick for McCarron.Buffalo also has released wide receiver Corey Coleman, a 2016 first-round draft pick by Cleveland whom the Bills acquired last month.The trade leaves second-year pro Nathan Peterman and first-round pick Josh Allen vying for the starting quarterback job in Buffalo. Peterman had a solid preseason for Buffalo, posting the best numbers of the group, while Allen has shown flashes and a strong arm after being drafted seventh overall in April.McCarron was initially considered the front-runner to land the starting job after signing a two-year contract in March, but struggled with inconsistent play. He also suffered a right shoulder injury in Buffalo’s second preseason game against Cleveland, which hindered his pursuit of the starting job.McCarron returned to lead the Bills to a late comeback victory at Chicago on Thursday night, though his performance was spotty.The Bills chose not to hold onto Coleman, who has been a disappointment since the Browns made him the 15th overall selection two years ago. Buffalo traded a seventh-round pick in 2020 for him.Other notable releases include tight end Nick O’Leary and punter Jon Ryan. O’Leary had been Buffalo’s No. 2 tight end the previous two years but had fallen down the depth chart this preseason. Ryan was signed on Aug. 21 after being released by Seattle after 10 years with the Seahawks. Incumbent Colton Schmidt outlasted Ryan in a brief competition.Wide receiver Ray-Ray McCloud, a sixth-round pick, remains on the roster after a strong finish to the preseason, as does undrafted receiver Robert Foster. Marcus Murphy earned a backup running back spot behind LeSean McCoy and Chris Ivory following a terrific preseason.Buffalo’s roster may not be set as areas of concern remain along the offensive line, where the team is still attempting to replace offseason departures center Eric Wood, guard Richie Incognito and tackle Cordy Glenn.__AP correspondent Mark Ludwiczak contributed to this report. You really have to squint in order to find an area of the 2018 Raiders that wasn’t really bad. They had basically one complete game all season. All the others showcased glaring problems on multiple different fronts. That’s what Pro Football Focus saw as well.Let’s start on the defense with the front seven. Where the Raiders were rotating players like crazy attempting to find something — anything — that worked. Whether it was defensive tackle, defensive end, or linebacker, a strength was hard to find. And ultimately, PFF ranked them as the worst front seven in the league.From there, we move to the secondary, where late in the season a couple players began to stand out in a positive way David Sharpe Jersey , but which ultimately still landed second to last in the league in PFF’s ranking, ahead of only the 49ers. Just as they did with the front seven, PFF ranks them one thing, then says ‘cheer up, grey skies are gonna clear up!’ in the breakdown.Then we hop back over to the offensive side of the ball, and the raggedy bunch on the offensive line. The interior trio is supposed to carry the load here, but injuries threw a wrench in that. And as we know, the rookie tackles were a travesty. They were ranked fifth from worst in the league by PFF.They didn’t do rankings for the receiving corps but had they, it wouldn’t have been pretty either.About the best thing they had to say about the Raiders was Derek Carr, who they ranked 19th among starting quarterbacks. So, below average. That is unless he is pressured, which was a LOT last season (see the offensive line rank for that). Under pressure, he was among the worst in the league — 25th among starting QB’s. He ranked 17th when not under pressure.Carr’s 19th rank is just ahead of Joe Flacco (20) who was benched for rookie Lamar Jackson and the Ravens immediately began winning, even though Jackson himself wasn’t great. The rest of the QB’s below that is a who’s who of UGH. Among those ranked ahead of Carr include the likes of Dak Prescott (18), Kirk Cousins (14), Andy Dalton (12), and Baker Mayfield (9).Follow @LeviDamien