Sid Mercer from the Chronology
Jun 8, 1917 -
After a game in Cincinnati John McGraw takes a swing at umpire Bill "Lord" Byron as they are leaving the field splitting Byron's lip. NL President John Tener fines McGraw $500 and suspends him for 16 days. McGraw sounds off to writer Sid Mercer about the general shortcomings of Tener and his umpires. When McGraw's quotes are published he signs a statement denying he'd said what was printed. The Baseball Writers Association protests forcing another NL meeting at which Tener finds McGraw guilty and fines him another $1000. Mercer a friend of McGraw's quits the beat and never speaks to McGraw again.