There are two officials in a game of rounders and one stands on the batting line to check for low/high balls and the other one stands just behind 2nd post to check for wide balls.
The officials vary, but there are two referees and two linesman during a hockey game.
Seven
Five innings constitute a game of rounders
16 football games during the regular season
there are 4 officials in an NHL game. 2 referees and 2 linesmen
29
29
There isn't a name for rounders in French because it's not a French game.
baseball
Rounders is a game that was invented by two people called William Clarke and John Newbery. The game was invented in 1828 in London.
There is one referee and six other officials on the field during an NFL game. Click on the 'NFL Officials' link on this page to see the duties of each official on the field and what equipment they use during the game.