The Raiders are no strangers to penalties hurting their cause. Oakland has been flagged 36 times for 306 yards over the past three weeks to raise its total to an AFC-high 112. Charlie Frye threw three interceptions, two players were ejected and 13 penalties cost the Raiders a season-high 126 yards last Sunday in Cleveland. Oakland lost 23-9 despite outgaining the Browns by more than 100 yards. "I've never seen flags thrown like that," said Pro Bowl defensive lineman Richard Seymour, who was called for two personal fouls on one play. "It was so ticky-tack. Obviously we have to understand how the game is being played and how the game is being called and play accordingly. We didn't do a good job of that after we understood that they were going to throw it if you looked the wrong way." The Raiders have given two of the Ravens' AFC North rivals fits this season. Bruce Gradkowski engineered a comeback in the final 2 minutes to beat division-champion Cincinnati 20-17 on Nov. 22, then threw three fourth-quarter TDs - each putting Oakland ahead - in a 27-24 win at Pittsburgh on Dec. 6. Gradkowski, however, partially tore the MCL in his right knee a week later, and Frye has compiled a 49.2 passer rating in two starts since. Gradkowski is listed as doubtful for Sunday and former No. 1 overall pick JaMarcus Russell appears relegated to the bench. Frye, who threw for 333 yards last week, has experience facing Baltimore. He posted an 80.5 rating with two TDs and two interceptions in a pair of starts against the Ravens with Cleveland in 2006. http://www.cbssports.com/nfl/gamecenter/preview/NFL_20100103_BAL@OAK