waiver – n. an official document indicating that someone has given up or waived a right or requirement
participant – n. a person who is involved in an activity or event
league – n. a group of sports teams that play against each other
monitor – n. to watch, observe, listen to, or check (something) for a special purpose over a period of time
anticipate – v. to think of (something that will or might happen in the future)
insert – v. to put (something) in something
engraved – adj. carved or cut lines, letters, designs, etc., on a hard surface