Bears–Cardinals rivalry

The Bears–Cardinals rivalry is a National Football League (NFL) rivalry between the Chicago Bears and the Arizona Cardinals. It is the oldest rivalry in the NFL and features the only two teams that remain from the league's inception in 1920. At that time, the Bears were known as the Decatur Staleys, and the Cardinals were the Racine Cardinals. In 1922, both teams moved to Chicago, and the matchup between the teams became known as "The Battle of Chicago" for 38 years, making it the first true rivalry in the league's history.

The rivalry diminished after the 1959 NFL season, when the Cardinals relocated to St. Louis. After the re-location, the NFL treated the Cardinals and Bears like any other inter-divisional pairing for scheduling purposes, resulting in the teams playing much less frequently. With the completion of the AFL-NFL merger in 1970, the enlarged NFL seriously considered (in addition to at least four other possible solutions) an alignment for the new National Football Conference that would have placed the Cardinals and Bears in the same division. Ultimately, this alignment was not chosen, and instead the Bears were placed in the NFC Central and the Cardinals in the NFC East. When the Cardinals moved to Arizona in 1988, the rivalry was further diminished.

Under the current NFL scheduling formula, the Bears and Cardinals play at least once every three years. The Bears currently lead the all-time series 59–29–6.

The first meeting
The Decatur Staleys and Racine Cardinals met for the first time on November 28, 1920 at Normal Park. Around 5,000 fans showed up to watch the Cardinals defeat the Staleys, 7–6. The loss was the only blemish in the Staleys record that season (ties were disregarded), and cost them the first American Professional Football Association title.

Grange's debut and 0–0 games
Shortly after finishing his college career at the University of Illinois, Red Grange made his NFL debut with the Bears on Thanksgiving against the Cardinals in 1925. Around 36,000 fans showed up at Cubs Park to see the Bears tie the Cardinals 0–0. In fact, this was one of 17 consecutive games after their first meeting which ended in a shutout for either or both teams, with four 0–0 scores. The Cardinals would win their first (and highly disputed) of two NFL championships that season.

The Ernie Nevers Game
The Cardinals' Ernie Nevers scored a still-standing NFL record of 40 points in a single game, doing so with six touchdowns and four extra points. Nevers scored all of the points in the Cardinals' 40–6 victory over the Bears on November 28, 1929. It was also the first game between the two teams since their inaugural game that did not end in a shutout.

Pat Coffee's 97-yard touchdown
The Cardinals' 42–28 loss to the Bears at Wrigley Field in 1937 was mostly remembered for Pat Coffee's then-record 97-yard touchdown pass to Gaynell Tinsley, one of ten combined touchdown passes in the game.

1950s: The end of the local rivalry
The Cardinals won their second and most recent NFL championship in 1947, but by the 1950s, the team was struggling on the field and at the gate. Nevertheless, in the 13 meetings between the Bears and Cardinals during the decade, the Bears only won seven of them. The Cardinals' last victory as a Chicago team over the Bears was a memorable one, as they won 53–14 at Comiskey Park in 1955 behind Ollie Matson's two touchdowns, including a 77-yard punt return. The Bears finished with a 47–19–6 all-time record against the Chicago Cardinals.

1960–1987: Chicago vs. St. Louis
In the 1960 season, the Cardinals moved to St. Louis, with the Bears helping facilitate the move by paying $500,000 as "moving expenses", as they were now the sole owners of the expanding TV rights in Chicago (they would later start using the "Wishbone-C" in their logo, which the Cardinals used since the 1920's, and was first used in 1898 by the University of Chicago football team). The Cardinals successfully kept its the team name despite the existence of the baseball Cardinals in the city. Coincidentally, both Cardinals franchises shared the same building during the football Cardinals' 28 seasons in St. Louis: Busch Stadium I from 1960 to 1965, and Busch Memorial Stadium from 1966 to 1987.

The two teams met only eleven times during the Cardinals' tenure in St. Louis, with the Cardinals amassing a 6–5 record. The Bears never played at Busch Stadium I. In the teams' first-ever meeting in St. Louis during the 1966 season, Cardinal defensive back Larry Wilson intercepted three passes, including a game-winning pick-six in St. Louis' 24–17 victory. Despite the Cardinals' success in St. Louis against the Bears, they only made four playoff appearances, and would once again be on the move after the 1987 season. The last-ever meeting between the Bears and St. Louis Cardinals came in the 1984 season, a game which saw Neil Lomax gash Buddy Ryan's 46 defense for six completions and 166 yards to Roy Green, and Ottis Anderson score two touchdowns in the Cardinals' 38–21 victory.

1988–present: Chicago vs. Phoenix/Arizona
The Cardinals moved further west to the Phoenix metropolitan area in 1988, becoming the Phoenix Cardinals. They then changed their name to the Arizona Cardinals in the 1994 season. As of 2021, the Bears won seven of 11 meetings with the Arizona Cardinals, but to this day, the teams have yet to face each other in the NFL playoffs.

The Dennis Green Game
The most memorable game of the rivalry took place on Monday Night Football during the 2006 season. The then-undefeated Bears (5–0 heading into the game) trailed the 1–4 Cardinals by 20 points at halftime. The Cardinals also held Bears quarterback Rex Grossman at just 144 yards passing while picking off Grossman four times while also recovering two fumbles from Grossman at the end of the game. However, the Cardinals still didn't win the game. At the end of the third quarter, Bears edge rusher Mark Anderson fumbled the ball out of Matt Leinart's hand and was recovered by Mike Brown for a touchdown and the Bears trailed 23–10 heading into the fourth quarter. However, Bears cornerback Charles Tillman returned a fumble by Edgerrin James that was forced out by Brian Urlacher 40 yards for a touchdown, and returner Devin Hester gave the Bears the lead with a 83-yard punt return touchdown. However, the Cardinals still had a chance to win. Cardinals quarterback Matt Leinart attempted a comeback drive where he drove the Cardinals from their own 38 to the Bears 23 yard line. They had a shot to win but kicker Neil Rackers missed a 40 yard field goal with 52 seconds left to secure the Bears comeback victory. The final score was 24–23 Bears. After the loss, Cardinals head coach Dennis Green made a memorable post-game rant with the media, screaming "The Bears are what we thought they were. They're what we thought they were. We played them in preseason—who the hell takes a third game of the preseason like it's bullshit? Bullshit! We played them in the third game—everybody played three quarters—the Bears are who we thought they were! That's why we took the damn field. Now if you want to crown them, then crown their ass! But they (the Bears) are who we thought they were, and we let them off the hook!" The game made NFL Top 10 Meltdowns where it landed at #7 on the list and also made Top 10 Greatest Comebacks landing at #6.

Other Chicago vs. Chicago rivalries

 * Cubs–White Sox rivalry (MLB)

Other Chicago vs. St. Louis rivalries

 * Cardinals–Cubs rivalry (MLB)
 * Blackhawks–Blues rivalry (NHL)