San Diego Chargers cornerback Antoine Cason intercepts the ball as Kansas City Chiefs wide receiver Dexter McCluster attempts to tackle him in the second quarter at Arrowhead Stadium. (US Presswire)

Arrowhead Stadium has historically been a house of horrors for the Chargers. San Diego’s defense turned the table on the Chiefs with six turnovers in an impressive 37-20 victory on Sunday.  A close look at the stats reveals tremendous room for improvement.

Offense: B-

The offense scored four TDs and three field goals. Normally that would be good enough for an A, but the offense could have done much better. QB Philip Rivers was 18 of 23 with two TDs, but he only threw for 209 yards. The offense had five consecutive drives stall between the second and third quarters and failed to cash in on two of the Chiefs' turnovers in that streak. This included Rivers throwing an interception in the red zone. The Chiefs then went on an 85-yard drive for a TD. “I was so mad at myself,” Rivers said of the INT. “Don’t give them any reason to get back in the game.”

Previous game's grade: F

Defense: B+

The defense won the game with aggressive play that led to the six turnovers. The Chiefs offense, however, still won many of the statistical battles. First downs: Chargers 19, Chiefs 25. Net yards: Chargers 293, Chiefs 353. Net rushing yards: Chargers 104, Chiefs 109. Net passing Yyrds: Chargers 189, Chiefs 234. Average yards per play: Chargers 4.9, Chiefs 5.3. The defense also surrendered two long TDs -- a 37-yard run by RB Jamaal Charles and a 29-yard reception by WR Dwayne Bowe.

Previous game's grade: F

Special teams: A-

K Nick Novak was signed on Saturday to replace K Nate Kaeding (groin). Novak was 3 for 3 in field goals (24, 47 and 45 yards) and was also perfect in extra points. The coverage unit didn't allow any big plays, and WR-KR Richard Goodman had a 26.5 kick-return average on two returns. P Mike Scifres, however, shanked one punt for 27 yards to earn the minus.

Previous game's grade: D

Coaching: A+

Last week, coach Norv Turner chewed out both the offense and defense for poor performances in a 27-3 loss to the Falcons. The players clearly responded, but the grade primarily goes to defensive coordinator John Pagano. He was told last Wednesday of his brother Chuck Pagano’s diagnosis of Leukemia but did not reveal it to the team and stayed focused to put together a great game plan.

Previous game's grade: F

Bottom line: The Chargers rebounded from their miserable performance the previous week. They complete the first quarter of the season in first place with a 3-1 overall record and a 3-0 record in the AFC, which includes two impressive road wins against divisional foes. The Chargers have won the games they needed to win and the ones they were expected to win; now they need to show consistency.

Follow the Chargers and Dan McLellan on Twitter @CBSChargers and @sandiegosports.