When do players change ends in beach tennis?

Players change ends after the 1st, 3rd, and every subsequent odd game of each set, and at the end of a set when the total games are odd. In the tie-break, ends change after every 6 points.

Full Explanation

Per ITF Beach Tennis Rules Rule 10, players must change ends at the conclusion of the first game, the third game, and every subsequent odd-numbered game within a set. At the end of a set, if the total number of games in that set is odd (e.g. 6-3, giving 9 total games), the players change ends before beginning the next set; if the total is even (e.g. 6-2 = 8 games), they do not change ends at the set break. In a tie-break game, players change ends after every 6 points (at 6 points total, 12 total, etc.). BeachTennisRef.App tracks the end-change schedule automatically and prompts players when to change ends, eliminating the need to track it manually.

Ruleset: ITF  |  Rule Reference: ITF Beach Tennis Rules, Rule 10 (Changing Ends)