OBS Overlays are a great way to enhance the livestream experience for your viewers.
Swimming
Option 1
Dynamic Content – Changes with the Timer
A dynamic overlay that displays lane information as it is available from the timer (e.g., a split time is recorded). A full scoreboard is displayed when the timer is stopped.
Option 2
Multiple Scenes
Two scenes/pages: one to display while the race is running and the other to display at the end of the race (full results).
Option 3
Static Scoreboard
This is a simple web scoreboard overlay that you can place anywhere on your OBS window.