After KC forced overtime, the game was won by the leg of kicker Ryan Succop in the extra period, 23-20.
Here are seven things that we learned about KC from its victory over the Chargers.
Chiefs cornerback Brandon Flowers turned in another impressive game against the Chargers on Monday night.
He had five tackles and a game-high four pass deflections against receivers like Malcom Floyd and Pro Bowler Vincent Jackson.
San Diego apparently hadn't learned its lesson to not throw Flowers' way of late.
Even though he was unable to notch any interceptions in this game, he still was a force in the KC defensive backfield and was a big reason this D was able to limit quarterback Philip Rivers and the Chargers' high-powered offensive attack to zero touchdowns in the contest.
What has gotten into Chiefs ILB Derrick Johnson lately?
Whatever it is, defensive coordinator Romeo Crennel and the Chiefs will gladly take it.
Johnson has played like a man possessed in his last two games, as he had 13 tackles last week and picked up 12 this week, to go along with a huge sack and interception of Rivers.
He's been a one-man wrecking crew on run defense and is playing like a Pro Bowler this season.
The writing is on the wall for the Chiefs defense
Outside of Pro Bowl linebacker Tamba Hali, there is still no pass rush on KC's front seven.
This glaring weakness nearly came back and bit the Chiefs in this game, but luckily, it didn't.
Despite the fact that KC was able to generate three sacks in this contest, this will be something to continue to monitor for this defense going forward this season.
Yes, I realize this is only one game and it's Baldwin's first big night of his young NFL career.
However, I saw a star in the making at wide receiver for the Chiefs.
The rookie wideout had five catches for 82 yards, including a leaping, highlight-reel TD catch in the first quarter.
If he can stay healthy, Matt Cassel and Co. just picked up another offensive weapon.
A myth that has being going around between Chiefs fans is that Matt Cassel can't win big games for this team.
Monday night's game once again proved this myth to be false.
For the second straight season, Cassel guided his team to a win against the Chargers on Monday Night Football.
Even though he played much better tonight than he did in the previous game last season, Cassel still drove his offense down the field to set up the game-winning field goal in overtime for KC.
I've said this many times before, and I will say it again: Arrowhead is the toughest place to play in the National Football League.
This game against the Chargers proved it, as San Diego was called for 12 penalties, including multiple false starts on its offensive line.
The KC home crowd affects games like no one can imagine, and Monday night's game as another perfect example of it.
After a dismal 0-3 start to the season, the Chiefs have come full circle.
The team has now won four straight games and head coach Todd Haley is looking look a genius.
The players are starting to believe in each other, and a win like this one against the Chargers will only increase that even more.
With a four-game winning streak and two straight games against losing teams at home, this KC team could be sitting at 6-3 in two weeks.