rounders is a noun which refers both to the game and the players of the game. The game involves players hitting a rubber ball with a bat and then running to a member of their team at the other end of the field. When used in this context, rounders is an abstract noun.
1. My friends and I often play a game of rounders.
2. He's been playing rounders since he was a child.
3. The national rounders team has been very successful in recent years.
rounders is often confused with baseball due to the similarity in rules and objective. However, these two sports are distinct and should not be confused with one another.