Updated

BALTIMORE (2-1) At BUFFALO (1-2)

1 p.m. EDT, CBS

OPENING LINE — Ravens by 3 1/2

2013 RECORD VS. SPREAD — Baltimore 2-1, Buffalo 2-1

SERIES RECORD — Ravens lead 3-2

LAST MEETING — Ravens beat Bills 37-34 OT, Oct. 24, 2010

LAST WEEK — Ravens beat Texans 30-9; Bills lost to Jets 27-20

AP PRO32 RANKING — Ravens No. 8; Bills No. 24

RAVENS OFFENSE — OVERALL (30), RUSH (25), PASS (20)

RAVENS DEFENSE — OVERALL (15t), RUSH (4), PASS (21)

BILLS OFFENSE — OVERALL (14), RUSH (5), PASS (25)

BILLS DEFENSE — OVERALL (28), RUSH (30t), PASS (19)

STREAKS, STATS AND NOTES — Only Ravens' second trip to Orchard Park, N.Y., following 19-14 loss in 2007. They've won four straight against AFC East teams, and are 7-2 under coach John Harbaugh vs. division. ... Baltimore seeking fifth consecutive 3-1 start, and has league-best 14-5 record in September since 2008. ... Defense hasn't lost beat despite losing stalwarts Ray Lewis and Ed Reed. After allowing seven touchdowns in season-opening 49-27 loss at Denver, Ravens haven't allowed TD in past two games. Also one of three teams (Dallas and Tampa Bay) that have yet to allow TD rushing this season. ... Defense has allowed just two rushes of 10 yards or longer. ... With RB Ray Rice nursing hip injury, rushing attack has struggled, having yet to top 100 yards and managing just 13 of team's 59 first downs. ... Bills defensive coordinator Mike Pettine goes against former team for second straight week. He served as Ravens' defensive assistant from 2002-08 before spending four years as Jets D-coordinator. ... Defense is banged up after losing DE Alex Carrington to season-ending quadriceps injury. Backfield depleted without starting CB Stephon Gilmore (broken left hand), backup CB Ron Brooks (broken right foot) and starting safety Jairus Byrd (plantar fasciitis both feet). Starting CB Leodis McKelvin (right hamstring) is questionable. ... Defense allowed season-worst 513 yards offense and 182 yards rushing against Jets. ... RB CJ Spiller averaging 3.6 yards per carry after finishing second in NFL last season with 6.009 average. ... Rookie QB EJ Manuel was sacked eight times by Jets after being sacked once in first two games. ... Bills' hurry-up offense is hurrying up getting off field. Ranks 31st, behind only Philadelphia, with 24:48 time of possession, and 28th in third-down conversions (14 of 45). ... Rookie LB Kiko Alonso has interceptions past two games, and team-best 27 tackles.

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AP NFL website: www.pro32.ap.org