According to the St. Petersburg, Florida Times Chet, who played outfield for 16 seasons with the Chicago White Sox (1975-81) and Detroit Tigers (1982-81) is now a coach at Eustis, Florida. The article discusses his conversion to J.W's, an operation on his spleen and his refusal of blood transfusions, as well as his baseball career.
See "Triumphing over death every day: Nearly killed by rare blood disease, All-Star Chet Lemon has bounced back to coach Eustis to the state title."
http://sptimes.com/2003/07/09/Sports/Triumphing_over_death.shtml