One of the surprises of this year's Wimbledon is the run of German player Laura Siegemund, who is one of the oldest women to reach a major quarterfinal in the Open Era.

Fritz and Mpetshi Perricard’s match, by contrast, was at the mercy of the most sacred and strange tradition of them all: the 11 p.m. curfew imposed on a sporting event beamed across the globe. Wimbledon is the only Grand Slam with an early bedtime, and the lights go out on time, every time, with no exceptions — almost.

Tiebreaker scoring is measured in points (e.g., 1, 2, 3, etc.). In the event two players or teams are tied 6-6 in a set, the tiebreaker set goes to the side who reaches seven points first with a winning margin of at least two points.