Grandstand (noun)

1. A large, covered seating area for spectators, typically at a sports ground or racecourse.
2. The act of showing off or making a public display, especially in order to impress or gain an advantage.

Origin:

From grand + stand, first attested in the early 19th century.

Examples:

1. The grandstand was filled with fans cheering on their team.
2. The grandstand offered a great view of the race.
3. The politician's grandstand speech was filled with empty promises.
4. The grandstand play won the game for the team.
5. His grandstand move impressed the audience.