<P> The Pittsburgh Steelers of the NFL first took to the field as the Pittsburgh Pirates on September 20, 1933, losing 23--2 to the New York Giants . Through the 1930s, the Pirates never finished higher than second place in their division, or with a record better than . 500 (1936). Pittsburgh did make history in 1938 by signing Byron White, a future Justice of the U.S. Supreme Court, to what was at the time the biggest contract in NFL history, but he played only one year with the Pirates before signing with the Detroit Lions . Prior to the 1940 season, the Pirates renamed themselves the Steelers . </P> <P> During World War II, the Steelers experienced player shortages . They twice merged with other NFL franchises to field a team . During the 1943 season, they merged with the Philadelphia Eagles forming the "Phil - Pitt Eagles" and were known as the "Steagles". This team went 5--4--1 . In 1944, they merged with the Chicago Cardinals and were known as Card - Pitt (or, mockingly, as the "Carpets"). This team finished 0--10, marking the only winless team in franchise history . </P> <P> The Steelers made the playoffs for the first time in 1947, tying for first place in the division at 8--4 with the Philadelphia Eagles . This forced a tie - breaking playoff game at Forbes Field, which the Steelers lost 21--0 . That would be Pittsburgh's only playoff game for the next 25 years; they did qualify for a "Playoff Bowl" in 1962 as the second - best team in their conference, but this was not considered an official playoff . </P> <P> In 1970, the year they moved into Three Rivers Stadium and the year of the AFL--NFL merger, the Pittsburgh Steelers were one of three old - guard NFL teams to switch to the newly formed American Football Conference (the others being the Cleveland Browns and the Baltimore Colts), in order to equalize the number of teams in the two conferences of the newly merged league . The Steelers also received a $3 million ($18.9 million today) relocation fee, which was a windfall for them; for years they rarely had enough to build a true contending team . </P>

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