Prelim (noun)

A preliminary event or contest, especially one in a sport or other competitive activity.

Origin:

Early 20th century: shortening of preliminary.

Examples:

1. He qualified for the finals by winning his prelim heat.
2. The team made it to the finals by winning their prelim match.
3. The prelim was a warm-up for the main event.
4. The prelim was a chance to test the team's strength.
5. The prelim round was the first step to the championship.