Josh Allen's 9-yard touchdown pass to Khalil Shakir has given the Bills a 13-7 lead on the Raiders with 7:13 remaining until halftime.
The Bills have scored on all three of their drives, but they settled for field goals on the first two possessions. Tyler Bass kicked field goals of 44 and 28 yards on drives of 30 and 58 yards.
On their touchdown drive, the Bills went 85 yards in nine plays.
Allen is 12-of-15 for 144 yards and a touchdown.
The Bills have outgained the Raiders 183 to 81.
The Raiders' touchdown came on Ashton Jeanty's 1-yard run.