The Eastern Conference was split into the Capitol and Century Divisions, and the Western Conference had the Coastal and Central Divisions. In the past, if two teams were tied for the division lead at season's end, a one-game playoff was conducted to break the tie. Starting in 1967, a tiebreaking system was implemented that started with net points in head-to-head competition, followed by the team that had less recently played in a title game. As such, only one team in a division would be the division winner, even if the won-lost record was the same.
Colts and Rams
For the second straight season, the Colts and Rams waged a tight season long battle for the Coastal Division title. In 1967, the Rams defeated the Colts in the season's final game to claim the title. They appeared headed for a similar showdown in 1968, as the Rams entered week 13 with a 10-1-1 record while the Colts were 11-1-0. But in the next to last game, the Rams were upset by the Chicago Bears 17-16 in what was known as "the lost down game." The biggest play in the game came when the Rams completed a second down pass to get into field goal range in the final minute, but the play was wiped out by a holding penalty. It should have remained second down due to the Bears accepting the penalty on the Rams, but the referees forgot to reset the down marker. After two incomplete passes, the Rams lined up for a fourth down attempt, but the referees waived the Bears offense onto the field on a change of possession; the Bears ran out the clock and the Colts clinched the division. Note that in the now meaningless season finale, the Colts won 28-24.
Week
Capitol
Century
Coastal
Central
1
Dallas*
1–0–0
Cleveland
1–0–0
Baltimore*
1–0–0
Minnesota*
1–0–0
2
Dallas*
2–0–0
Cleveland*
1–1–0
Baltimore*
2–0–0
Minnesota*
2–0–0
3
Dallas*
3–0–0
Cleveland*
1–2–0
Baltimore*
3–0–0
Minnesota*
2–1–0
4
Dallas
4–0–0
Cleveland
2–2–0
Baltimore*
4–0–0
Minnesota
3–1–0
5
Dallas
5–0–0
St. Louis*
2–3–0
Baltimore*
5–0–0
Minnesota*
3–2–0
6
Dallas
6–0–0
St. Louis*
3–3–0
Los Angeles
6–0–0
Detroit
3–2–1
7
Dallas
6–1–0
St. Louis*
4–3–0
Baltimore*
6–1–0
Detroit*
3–3–1
8
Dallas
7–1–0
St. Louis*
5–3–0
Baltimore*
7–1–0
Chicago*
4–4–0
9
Dallas
7–2–0
Cleveland
6–3–0
Baltimore*
8–1–0
Chicago*
5–4–0
10
Dallas
8–2–0
Cleveland
7–3–0
Baltimore
9–1–0
Minnesota
6–4–0
11
Dallas
9–2–0
Cleveland
8–3–0
Baltimore
10–1–0
Minnesota
6–5–0
12
Dallas
10–2–0
Cleveland
9–3–0
Baltimore
11–1–0
Chicago*
6–6–0
13
Dallas
11–2–0
Cleveland
10–3–0
Baltimore
12–1–0
Chicago*
7–6–0
14
Dallas
12–2–0
Cleveland
10–4–0
Baltimore
13–1–0
Minnesota
8–6–0
indicates more than one team with record
Final standings
W = Wins, L = Losses, T = Ties, PCT= Winning Percentage, PF= Points For, PA = Points Against Note: Prior to 1972, the NFL did not include tie games when calculating a team's winning percentage in the official standings