retiring

After retiring as president of Caltech, he remained on staff in an emeritus capacity, and was appointed the Robert Andrews Millikan professor of biology.

After a 2009 performance in Carnegie Hall, Riley announced that enough was enough, he was retiring from playing it.

Higuita would only play six more times for Colombia before retiring from international duty in 1999, or perhaps his country was naturally moving on.

An infielder, Schaeffer hit .214 over six minor league seasons before retiring as a player to become a minor league manager in the Rockies system.

Mayweather, who has won titles across five weight classes, has competed in a number of exhibition bouts since retiring in 2017 with his last outing coming against John Gotti III last August.