For sports like Golf and Cross Country (or even darts), a team wins by achieving the lowest score in a competition. By default, Athletics Manager awards a "Win" result to the team with the highest score in a match. This behavior can be adjusted on a per-sport basis.
To set a sport to show a victory for the lowest result, go to the Team Classification screen from the Athletics Manager Dashboard. In the list of sports, find the sport you want to update and hover over the name to reveal the fly-out menu, then click the pencil icon to open the "Edit Sport" window.
From the third dropdown menu, "Scoring," select "Low Score Wins."
Any team created for that sport (e.g., Middle School Golf, Upper School Golf, etc.) will inherit the "Low Score Wins" setting, and the results will display appropriately.