It is a place where light and shadow can play under supervised conditions.

For instance, the Cuban soccer team played here under similar conditions last July.

"No doubt we played well under adverse conditions," Mayweather said.

"Who says a game is supposed to be played under optimum conditions with perfect calls?"

In fact he's played darn well under adverse conditions.

They're there to study athletes playing under actual professional conditions: using wooden bats.

It was go, played for desperate stakes and under impossible conditions.

Then when we get on and are playing under severe conditions, people see us and say women can't play.

By nearly all accounts, it would have been unthinkable for the Mustangs to attempt to play the 1988 season under such conditions.

The game was played at National Arena, under special conditions.