Which of the following is NOT a popular format in non-professional tournaments?

In the context of non-professional tournaments, team relay is generally less common than the other formats mentioned. Stroke play, best ball, and match play are widely recognized and utilized formats that cater to various skill levels and foster competitiveness in amateur events.

Stroke play is a traditional format where the total number of strokes taken by a player over the course of the tournament is counted, and it is often used in amateur competitions due to its straightforward nature. Best ball involves teams of players competing where each player on a team plays their own ball, and the best score among them for each hole is recorded, encouraging teamwork while allowing for individual performance. Match play is another popular format where players compete head-to-head, and each hole is played as a separate contest, adding a layer of strategic competition.

In contrast, team relay, while it does exist in some contexts, is not a standard or widely adopted format in most non-professional tournaments. It typically involves teams completing a course in succession, and is less familiar to many players compared to the other formats, which is why it does not have the same level of popularity or recognition.