Original sentence: The biggest club in the league and the organization's bellwether was the New York Cosmos, who drew upwards of 40,000 fans per game at their height while aging Brazilian superstar Pelé (considered to be the greatest player in the sport's history) played for them
Edited sentence: The biggest club in the league and the organization's bellwether was the New York Cosmos, who drew upwards of 40,000 fans per game at their height while aging Brazilian superstar Pelé (considered to be at that moment the greatest player in the sport's history, but later considered second behind Diego Maradona) played for them