Every Wednesday, this site examines a rule or governing principle that shapes how tennis is actually played. We are currently in the midst of a sequential walkthrough of The Code, exploring one principle at a time as it appears within the USTA’s Friend at Court. Last week, we examined why reversing an incorrect out call awards the point to the opponent rather than replaying it. This week, we turn to the final sentence of Principle 12, which contains an exception that many recreational players have probably never stopped to consider.
Out calls reversed. A player who calls a ball out must reverse the call if the player becomes uncertain or realizes that the ball was good. The point goes to the opponent and is not replayed. However, when a receiver reverses a fault call on a serve that hit the net, the server is entitled to two serves.
USTA Friend at Court 2026 , The Code, Principle 12
At first glance, this appears to be a narrow exception to the general rule. In reality, it is the logical consequence of another rule that most players are already familiar with. The key is the phrase, “serve that hit the net.”
If a serve clips the net and still lands in the proper service box, it is not a fault but rather a let. Under the Rules of Tennis, a let serve does not count as either a first or second serve. The server simply begins the service sequence again with two serves available.
Imagine a receiver initially calls a “Fault,” but a moment later realizes the ball clipped the net and also landed in the correct service box. The receiver reverses the call. At that point, the serve is no longer considered a fault. It is recognized for what it always was: a let.
Once the serve is correctly classified as a let, the normal rules governing let serves immediately apply. The server is entitled to begin the point again with two serves.
Thus, Principle 12 does not create a special privilege for the server or carve out an arbitrary exception to the previous rule. Instead, it recognizes that correcting the call changes the legal status of the serve. Because the serve was actually a let, the remedy is dictated by the Rules of Tennis rather than by the normal consequence of reversing an incorrect out call during a point.
I suspect this is a nuance that many recreational players have never fully appreciated. Most of us understand that a let results in two serves. Far fewer have considered what happens when a receiver initially calls a serve that clipped the net out only to immediately decide that it touched the line. Principle 12 quietly answers that question.
This small exception also reinforces a broader theme that has emerged throughout this series. The Code favors simple, consistent resolutions whenever possible, but fairness trumps consistency as its highest value. When two governing principles intersect, the correct outcome is the one that faithfully applies both.
Next week, we will conclude our discussion of Principle 12 by comparing today’s rule with the version that appeared in the 2001 edition of Friend at Court. The evolution is surprisingly revealing and illustrates how The Code has steadily moved toward clearer, more objective, and more administratively consistent principles for self-officiated tennis.
- Friend at Court: The Handbook of Tennis Rules and Regulations, USTA, 2026
- Friend at Court: The USTA Handbook of Tennis Rules and Regulations, USTA, 2001. (Hardcopy.)
