Possible Clues:

• Last decade of a century
• Dot-com boom era
• Games on square that make batsmen nervous
• They end a century
• Last decade of century
• Not, by the sound of it, up to ten, but about ten ago
• They were gay
• Some years ago they were not, by the sound of them, quite ten
• Past them at not quite ten knots
• Matches on square often nervous for batsmen