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The all-time series is at 3-3, including the 2011 playoff game at Arrowhead.
This week they face the Baltimore Ravens, a team the Chiefs lead in their all-time regular season series by 1 game. The Chiefs are 3-2 all-time in the regular season against the Ravens but 3-3 all-time when you include the 2011 playoff game.
The Chiefs beat the Ravens back in 1999 in their first all-time matchup, a game that had two touchdowns from Tony G. and two interception return touchdowns from -- flashback! -- James Hasty and Reggie Tongue.
The second game in the series was Dante's punt return touchdown with about five minutes remaining, giving the Chiefs the lead and the win.
The Chiefs and Ravens played on Monday Night Football in 2004 and the Chiefs won that game, their third in a row over the Ravens.
Since then the Ravens have won three in a row against the Chiefs.
In 2006, it was the Ravens who snapped the Chiefs 18-game winning streak at home in December, dating back to 1997. In 2009, it was the season opener -- Brodie Croyle time -- and the Chiefs were actually in that game midway through the fourth quarter before losing. Then of course came the 2011 playoff game, a 30-7 loss at Arrowhead.