Up until the end of 1997 the Club had won every men’s Badge grade except the top grade 1/1.
In the Centenary Year of 1998 the men’s team No. 1 won Grade 1/1 to complete the matrix. The team comprised Craig Edwards (Captain), John Toohey, David Parslow, Brendon Rose and Rod Niccol. This team went on to win Grade 1/1 for the following two years.

At the Badge Presentation Night on 19 September 1998 the Club was presented with the Norm Duncan Trophy for the best and strongest men’s Club for the 1998 season. The Thursday Ladies Badge team received the trophy for the friendliest Ladies team in the competition.

The first function in the 1998 Centenary Year was the Ladies Centenary Luncheon held at the Beecroft Bowling Club on 21 August 1998– a most enjoyable event of reminiscence.

The main Centenary Celebration Luncheon took place on Sunday 15 November 1998 when 175 present and past members of the Club gathered at the Garden Suite, Oatlands House.

Geoff Pollard AM, President of Tennis Australia , proposed the Toast to the Club and John Whittaker, President of Tennis NSW, presented a Certificate of Merit to the Club. Other guests included Mal Bergmann, Deputy President of Tennis NSW, Barry Masters, Chief Executive Tennis NSW, Paul Wigney, President MGCCA, Councillor Stephen Pringle, Mayor of Hornsby Shire Council and Patron of the Club, Life Members, Past Presidents and all partners.

Long time Patron and Life Member Joan Austin OAM and President Graham Gann jointly cut the Centenary Cake. It was a wonderful occasion for all present.

The Hornsby Shire Council (which was founded 8 years later in 1906) presented to the Club a Certificate recognising 100 years of service to the community.