Question: In 1932, the Portsmouth Spartans appeared in the league championship game, the first playoff game in NFL history, losing to the Chicago Bears 9–0, the History of the Detroit Lions, a professional American football franchise based in Detroit, Michigan, dates back to 1929 when they played in Portsmouth, Ohio as the Portsmouth Spartans, and is currently in their which number season?

Context articles: NFL starting quarterback playoff records
History of the Detroit Lions
History of the Portsmouth Spartans
List of Detroit Lions seasons
History of the Pittsburgh Steelers
Ernie Caddel
Bears–Lions rivalry
List of Detroit Lions players
1975 Detroit Lions season
1932 Portsmouth Spartans season

The first official National Football League (NFL) playoff game was the 1933 NFL Championship Game between the Chicago Bears and New York Giants.
 A "playoff" game was played in 1932 between the Chicago Bears and Portsmouth Spartans to break a regular season tie, but is recorded in the team record books as a regular season game.
 Since then there have been a total over 525 NFL playoff games including games from the AFL, but not the AAFC.
 The following list shows career postseason records for each starting quarterback in the NFL playoffs.
The History of the Detroit Lions, a professional American football franchise based in Detroit, Michigan, dates back to 1929 when they played in Portsmouth, Ohio as the Portsmouth Spartans.
 Currently in their 88th season, they are one of the National Football League's oldest franchises.
The professional American football team now known as the Detroit Lions previously played in Portsmouth, Ohio from its founding in 1929 to its relocation to Detroit in 1934.
 This article chronicles the team's history during their time as the Portsmouth Spartans.
 Originally drawing players from defunct independent professional and semi-pro teams, they joined the fledgling National Football League in 1930.
 Their home stadium was Universal Stadium (known today as Spartan Municipal Stadium).
The Detroit Lions are a professional American football team based in Detroit, Michigan.
 The Lions compete in the National Football League (NFL) as a member club of the league's National Football Conference (NFC) North division.
 The team plays its home games at Ford Field in Downtown Detroit.
 Originally based in Portsmouth, Ohio and called the Portsmouth Spartans, the team began play in 1928 as an independent professional team.
 The 2015 season was their 86th in the NFL.
This article details the history of the Pittsburgh Steelers.
 The Steelers are an American football franchise representing Pittsburgh.
 They are the seventh-oldest club in the National Football League (NFL), which they joined in .
 The only surviving NFL teams with a longer history are the Chicago Bears, Chicago (Arizona as well as St. Louis) Cardinals, Detroit Lions (then the Portsmouth Spartans), Green Bay Packers, New York Giants and Boston (Washington) Redskins.
 The Philadelphia Eagles joined the league concurrently with the Steelers in 1933.
Ernest Wiley Caddel (March 12, 1911 – March 28, 1992) was an American football running back.
 He played college football for Glenn "Pop" Warner at Stanford University from 1930 to 1932 and later played six seasons in the National Football League for the Portsmouth Spartans (1933) and Detroit Lions (1934–1938).
 He helped lead the Detroit Lions to the NFL championship in 1935 and led the NFL in average yards gained per rushing carry for three consecutive years, from 1935 to 1937.
 He was also the first player in NFL history to finish among the top 10 players in the league in both rushing and receiving yards, accomplishing the feat in 1934 and again in 1936.
 He was known during his football career as the "Blond Antelope."
The Bears–Lions rivalry is a National Football League (NFL) rivalry between the Chicago Bears and Detroit Lions.
 The franchises first met in 1930 when the Lions were known as the Portsmouth Spartans and based in Portsmouth, Ohio.
 They moved to Detroit for the 1934 season.
 The Bears and Lions have been division rivals since 1933 and have usually met twice a season since the Lions franchise began.
This is a list of American football players who have played for the Detroit Lions or for the Portsmouth Spartans (1930–33), in the National Football League (NFL).
 It includes players that have played at least five matches on the NFL regular season.
 The Detroit Lions franchise was founded in Portsmouth, Ohio as the Portsmouth Spartans.
 In 1934, the franchise moved to Detroit and changed their name to the Lions, which was a play on the name of the Detroit Tigers.
The 1975 Detroit Lions season was the 46th season in franchise history.
 It was the first season for the Detroit Lions at the new Silverdome in Pontiac, a Detroit suburb, which was built specifically for the team.
 It was also their first ever season outside of Detroit since the franchise's move and name change in 1934; its first three seasons were played in Portsmouth, Ohio as the Portsmouth Spartans.
 For the seventh consecutive season, the Lions finished the season in second place.
In 1932, the Portsmouth Spartans appeared in the league championship game, the first playoff game in NFL history, losing to the Chicago Bears 9–0.
 With a record of 6–1–4 in 1932, the Spartans finished in a tie for the NFL title with the Chicago Bears.
 It was the first time in history that the season ended with two teams atop the league's standings.
 (Ties were omitted in calculating winning percentage.)
 Both games during the season between Portsmouth and Chicago had ended in ties.
 To determine a sole champion, the league office arranged for the first playoff game in NFL history.