1989 Volvo U.S. National Indoor – Singles

Andre Agassi was the defending champion but lost in the third round to Johan Kriek. Brad Gilbert won in the final 6–2, 6–2 when Kriek was forced to retire.

Source: Wikipedia DBpedia

What is 1989 Volvo U.S. National Indoor – Singles subject of?

1989 Volvo U.S. National Indoor – Singles is subject of U.S. National Indoor Tennis Championships and 1989 Grand Prix (tennis).