- Bats Unknown, Throws Unknown
Sweigert is one of four amateur players who made their only major league appearance for the Philadelphia Athletics of the American Association on October 12, 1890 against the Syracuse Stars. It was the last game of the season, and was played in Gloucester, NJ. Early researchers confused this Sweigert with a Hampton Sweigert, who was a minor league player at the time. It is in fact very unlikely that the two were the same man, and, moreover, this Sweigert probably had another first name, as absolutely nothing else is known about him or his three teammates for that day, Bob Stafford, John McBride and "John" Sterling.
- "October 12, 1890", in Bill Carle, ed. Biographical Research Committee Report, September/October 2007, Society for American Baseball Research, Cleveland, OH, 2007. p. 1.