A renowned individual of extraordinary caliber, whose life has been extensively documented and chronicled, has left an indelible mark on the world.
Please provide the original text, and I'll rephrase it as long as possible, keeping the new lines and formatting intact, and then provide the rephrased response.
Leonard Ray Dawson, a legendary American football quarterback, embarked on a remarkable 19-season professional journey, predominantly associated with the esteemed Kansas City Chiefs franchise. Born on June 20, 1935, Dawson's illustrious career spanned across two prominent leagues: the National Football League (NFL) and the American Football League (AFL).
Dawson's professional odyssey commenced in 1957 with the Pittsburgh Steelers of the NFL, where he gained valuable experience before joining the Cleveland Browns. However, he departed the NFL in 1962 to explore new opportunities with the AFL's Dallas Texans, which later rebranded as the Kansas City Chiefs.
For the next 14 seasons, Dawson flourished with the Chiefs, becoming an integral part of the team's identity. The AFL-NFL merger ultimately led Dawson to rejoin the NFL, rounding out his illustrious career with the Chiefs.
