During an 1887 game in the American Association, McQuaid was part of the first major league regular-season two-man umpiring crew.
[2] McQuaid was the umpire in an 1891 Boston-Chicago game that resulted in a rule change related to batters who could hit from both sides of the plate.
Kid Nichols was pitching for Boston and attempting to intentionally walk Chicago's Cap Anson with two runners on base.
Each time that Nichols would begin to deliver a pitch, Anson would jump to the other side of home plate.
The game would have ended the same way if an intentional walk had been delivered, but the odd encounter resulted in a new rule that declared a batter out if he changed sides of the plate after the pitcher was set.