He was a starting pitcher for the Syracuse Stars of the American Association for the last two months of the 1890 season.
Mars led the 55–72 Stars in winning percentage (.643) with a 9–5 record.
He was also one of the league's better fielding pitchers, as he made only 2 errors in his 16 total appearances.
Mars died in his hometown of Chicago, Illinois at the age of 75.
This biographical article relating to an American baseball pitcher born in the 1860s is a stub.