Carmelo Anthony, one of the most prolific scorers in NBA history, has announced his retirement after 19 seasons in the league. He retires as the No. 9 scorer in league history and expressed his gratitude for the cities he represented and the fans that supported him. Anthony is also set to release a memoir, titled "Carmelo Anthony: On My Journey to the NBA," which will detail his journey and future plans. His retirement marks the end of an era for the NBA.