First serve, second serve and service let
Understand faults, double faults and why a let on second serve does not restore the first serve.
A fault creates a second chance
Under the ITF rules, if the first service is a fault, the server serves again from the relevant half of the court. Two consecutive faults lose the point. A first fault is therefore not itself a point awarded to the receiver.
Read the point score after the completed point, not after every serving attempt. A missed first serve can happen without the game score changing, because the server still has the second service available.
A service let repeats that service
A served ball touching the net, strap or band can be a service let when the conditions in the rules are met. The particular service does not count and is taken again. Net contact alone is not enough to classify every serve as a let.
A service let does not cancel a previous fault. If a player has already missed the first serve and then serves a let, the repeat remains a second serve. It is not a return to two new attempts.
Not every let has the same consequence
The general let rule can replay the whole point, while the rules distinguish a service let on second service. For example, an interruption during a rally is not simply the same event as the ball clipping the net on a serve.
Alternative approved procedures can apply, so check the competition format. On ScoreZaap, use the point score and latest event together. This guide describes the standard rules; it does not claim every tournament uses the same let procedure or that a score feed lists each serving attempt.