GREEN BAY, Wis Ed Belfour Jersey . (AP) Patrick Mahomes and the Kansas City Chiefs still can't seem to put together a strong performance on both sides of the ball.The defending Super Bowl champions suddenly look vulnerable as they've fallen behind three other teams in the race for the AFC's top playoff seed.The Chiefs started slowly for a second straight week and on Sunday night for their third defeat in five games.Kansas City (8-4) fell a game behind Baltimore and Miami and a half-game behind Jacksonville, which hosts Cincinnati on Monday night, in the race for the AFC's best record and lone first-round bye.ADVERTISEMENT Obviously, were not where we want to be at, but I feel like were close," said Mahomes, who went 21 of 33 for 210 yards with a touchdown and an interception. "Were playing a lot of good football teams really well, winning some of those games, losing some of those games. Were kind of in the go-zone now where weve got to try to get it going through this stretch and all we can do is learn from this game and be focused on another challenge this next week coming to Arrowhead. Catching up to the other AFC heavyweights could prove challenging.A defense that has ranked among the leagues best all season kept taking hits Sunday rather than dishing them out. Linebacker Drue Tranquill left with a concu sion in the first quarter and safety Bryan Cook was carted off the field San Jose Sharks Jersey with an ankle injury in the second half.Those injuries took a toll as Green Bay put up the highest point total the Chiefs had allowed all season.You cant give up 27 points on the road in a hostile environment like this," defensive tackle Ryan Carpenter Jersey Chris Jones said. Its tough.If either Tranquill or Cook mi ses substantial time and the defense takes a step back, it will put even more pre sure on Mahomes. The two-time MVP has shown plenty of times hes capable of carrying that burden. That was evident last week, when the Chiefs rallied from an early 14-0 deficit to win 31-17 at Las Vegas.But after Kansas City gave up touchdowns on three of Green Bays first four po se sions, Mahomes couldnt bring the Chiefs all the way back.He threw an interception in the fourth quarter with Kansas City trailing by five that set up a field goal for the Packers.Still, the Chiefs had one more shot.The Chiefs got the ball back at their Quentin Musty Jersey own 30 with 1:09 left and no timeouts. Mahomes quickly got his team into Packers territory, but the Chiefs stalled out at the Green Bay 33.Pa s interference wasnt called on a long incompletion to Marquez Valdes-Scantling. A pa s into the end zone on the games final play was knocked away.It is what it is, man," Mahomes said about no penalty being called on the pa s to Valdes-Scantling. "Obviously, the guy was probably a little early, but at the end of the game, theyre letting guys play. Im kind of about that. Id rather you let the guys play and let the guys win it on the field. But its a hard job, man. Were in that situation, I cant be wanting a flag, I have to try and go out there and win the game myself and with the rest of my teammates.Mahomes and star tight end Travis Kelce, who had four catches for 81 yards, could use more help. Wide receiver Rashee Rice must build on his breakthrough performance against the Raiders. Isiah Pacheco ran for 110 yards Sunday night but got ejected on the games final series.Another Super Bowl run remains po sible for this Chiefs team, but they're hardly a dominant bunch. They can't afford to make the mistakes that proved costly Sunday night.Thats a good football team and they executed better than us, and thats the bottom line, Kelce said. Weve just got to keep rallying together and keep just fighting and growing together.__ Scott Sabourin Jersey _AP NFL: