The Volvo International, also known as the Pilot Pen International, was a professional tennis tournament founded in 1972 as the Bretton Woods WCT^[1] it was played on clay courts to 1984 and on outdoor hard courts from 1985 to 1998. It was first held at the Mount Washington Resort in Bretton Woods, New Hampshire in the United States in 1973 after Rod Laver had run a successful summer camp there.^[2] The International was originally part of the Grand Prix tennis circuit until the formation of the ATP Tour in 1990, when it became part of the Championship Series until its dissolution.

The event moved to several American locations during its run, including Mount Cranmore in North Conway, New Hampshire, from 1975 to 1984,^[3] Stratton Mountain Resort at Stratton Mountain, Vermont, from 1985 to 1989, and eventually to New Haven, Connecticut^[4] from 1990 until 1998, before it was discontinued.

In 2005, the ATP event at Long Island (known as the TD Waterhouse Cup) was moved to New Haven, where it merged with the WTA Tour's Pilot Pen Tennis. The current ATP Pilot Pen event is considered to be a continuation of the Long Island event rather than of the International.^[5]