Though best known today by his childhood nickname "Nixey", in reality, he was seldom ever referred to by that name in contemporary sources during his playing days, as he instead preferred to go by Jimmy (or James) Callahan.

[2] Callahan made his debut for the 1894 Philadelphia Phillies, the National League team run by Arthur Irwin.

Callahan pitched in nine games that year, giving up more than an earned run per inning, so he was sent to the minor leagues for the 1895 season.

[3] Remarkably, only two years earlier, in the other extreme of his career, he had given up 48 hits in two consecutive starts in 1900, yielding 23 on September 11 and 25 in the game before.

Three nineteenth-century pitcher/infielders beat these numbers: John Montgomery Ward, Kid Gleason and Dave Foutz.