The drive led to a field goal but was marred by missed opportunities. Two plays after tight end Lance Kendricks dropped a touchdown pass, the Packers wanted to go for it on fourth-and-3 in the red zone, but right guard Byron Bell false-started.

From there, Green Bay's backup offensive line never really got going. Right tackle Kyle Murphy wasn't the only one with a rough night, but his one-on-one struggles in pass protection stood out.

In general, there wasn't much to be found on the ground, while Hundley and Kizer were sacked a combined five times for 43 lost yards. The two QBs, who each played a half, combined to go 19-of-37 for 198 yards.

A total of 13 penalties for 110 yards were marked off against Green Bay as well, most of them against the offense, as the unit produced only three more points after the opening drive.

"We were in second-and-long, just way too many long down-and-distances and didn't overcome it very much," McCarthy said.

"It was clearly not a very good evening for us up front."

Green Bay's other field goal, which gave the Packers a 6-3 lead in the second half, was set up by a Raiders fumble in plus territory.

Safety Raven Greene forced Oakland QB E.J. Manuel to cough it up and linebacker Greer Martini recovered, but the offense didn't fully capitalize, as a successful fourth-and-goal TD run of 3 yards was wiped out by two penalties on lineman Dillon Day.

The Packers' No. 1 defense under new coordinator Mike Pettine played a couple of series and allowed just a field goal. After rookie cornerback Jaire Alexander was outjumped by receiver Amari Cooper for a 49-yard gain on the first snap of the game, the defense ultimately held on goal-to-go.

Reggie Gilbert's third-down sack and forced fumble, recovered by Raiders QB Derek Carr, thwarted Oakland's first drive.

"Third game in the system, the communication looked to be real clean between Mike and his assistants," McCarthy said. "We still have some substitution things to work on."