Lynch's sole appearance in a major league game occurred on August 5, 1884, when he pitched seven innings against the Cleveland Blues.

[1] An uncorroborated letter to the editor in 1990 stated that Lynch was deaf (resulting in the nickname "Dummy") and attended Gallaudet University.

[3] A 1910 newspaper article recounted a past incident involving pitcher "Dummy" Lynch playing for a team from Danville, Illinois, along with John Grim.

[4] Grim was a contemporary of Thomas Lynch, adding some support to the 1990 letter.

This biographical article relating to an American baseball pitcher born in the 1850s is a stub.