He, along with his brother John Paine, was disqualified from the rapid fire pistol because their firearms were not of the appropriate caliber.

[1] The Paine brothers used Colt revolvers in the 25 metre military pistol event, these pistols were superior to the arms used by their opponents, and the brothers had little difficulty winning the top two spots.

[4] After winning the military pistol, John withdrew from the 30 metre free pistol event, Sumner easily won this event as well, scoring exactly the same number of points (442) as John had to win the military pistol event, he did this on one fewer hit (24), though, in this case, the second place competitor scored 285 points.

[5] In 1901, Paine went home to find his wife in bed with his daughter's music teacher.

He was briefly jailed and charged with assault until the police realized who he was and accepted that he must have missed on purpose.