BALTIMORE -- The Baltimore Ravens enjoyed a record-setting day at the expense of the mistake-prone Oakland Raiders, who matched a dubious franchise mark that had not been broached in over three decades.
It was a rare blowout for the AFC North-leading Ravens, who won their previous five games by a total of 23 points.
Asked how such a thing could happen, coach John Harbaugh replied, "I have no answer for that. Sometimes it just goes that way, right? Our guys made some plays."
Quite a few, actually. The Ravens (7-2) scored on six of their first seven possessions, special teams contributed two touchdowns and Torrey Smith caught TD passes of 47 and 20 yards.
Flacco and the resurgent Baltimore offense made it look easy against the struggling Raiders (3-6), who have yielded at least 40 points in two straight games for the first time since 1962. The 55 points tied an Oakland record for points allowed, set in 1961 and matched in 1981.
"We had too many mental errors on defense, gave up too many big plays, we turned the ball over too many times and we didn't execute on special teams," Raiders coach Dennis Allen said. "When you do those things, it generally results in something like that."
Baltimore led 27-10 at halftime. In the third quarter, Smith scored twice and holder Sam Koch scored on a fake field goal to make it 48-17.
In the fourth quarter, Jones scored on a kickoff return for the second time this season for a 55-20 lead. Baltimore's previous record for points in a game was 48, against Detroit in December 2009.
"Obviously, we had success," said Flacco, who also ran for a score. "We ran the game plan and it worked well. We stuck with it. We scored points early and continued to score them."
Baltimore has 15 straight home wins, the longest current streak in the NFL.
Carson Palmer went 29 for 45 for 368 yards and two touchdowns for Oakland. He was mercifully pulled in the fourth quarter.
"Rough, rough, rough, rough game," Palmer said. "We didn't play any good in any facet of the game. Came in and got outplayed by a good football team. It's very frustrating. We got to put this one in our rear view mirror, because it's going to be a tough one to get past."
Baltimore didn't punt until the third quarter, and even that turned out well. Phillip Adams fumbled, the Ravens recovered the ball and Flacco promptly threw a touchdown pass to Smith.
Later in the quarter, Koch ran 7 yards for a touchdown to cap a 74-yard drive.
Burned for 251 yards on the ground last week by Tampa Bay rookie Doug Martin in a 42-32 defeat, Oakland shored up its run defense to stop Ray Rice. So Flacco went to the air, repeatedly hitting tight ends Dennis Pitta and Ed Dickson over the middle in the first half before going long and outside to Smith in the third quarter.
Flacco went 21 for 33 and did not play in the fourth quarter.
Rice ran for 35 yards and a touchdown on 13 carries. He finished the afternoon with 5,034 yards rushing for his career, joining Jamal Lewis as the only players in Ravens history to top 5,000.
The Ravens won without defensive tackle Haloti Ngata and cornerback Jimmy Smith. Ngata dressed but rested a shoulder injury, and Smith could not get warmed up properly from a groin injury, according to Harbaugh.
The Raiders used a 55-yard pass from Palmer to Darrius Heyward-Bey to close to 20-10 with 1:39 left in the second quarter. It was the ninth straight game in which Oakland scored in the final two minutes of the first half.
But that gave Flacco enough time to add another touchdown before the break. He went 5 for 6 for 73 yards before Rice ran for a 7-yard score.
Oakland's first possession ended with Palmer flat on his back. On a fourth and 1 from the Baltimore 44, Palmer took the snap from center and took one step backward before right guard Mike Brisiel stepped on his right foot. The Ravens then moved 22 yards before Justin Tucker kicked a field goal.
After an Oakland punt, Flacco completed an 18-yard pass to Pitta and connected with Dickson for 40 yards before scoring on a 1-yard run to make it 10-0.
Flacco responded by covering 80 yards in six plays for a 17-3 lead. After completing a 47-yard pass to Jones and a 19-yarder to Dixon, Flacco tossed a 5-yard touchdown pass to Pitta.
The Raiders followed with their first drive that included multiple first downs, but that ended poorly, too. Paul Kruger picked off a short pass and took it to the Oakland 32, which led to field goal.
Oakland LB Travis Goethel left in the first quarter with a knee injury and did not return. Oakland CB Michael Huff was kicked in calf, and S Matt Giordano and TE Brandon Myers sustained concussions. ... Baltimore is 7-1 against Oakland (including playoffs) and 5-0 at home. ... Jones is the first Ravens player to have two KO returns for TDs.
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