He played cricket at both school and university, captaining the Wellington College side for three years.
[4] He was also noted for his fielding: Pelham Warner in an obituary of him in The Times claimed that he may never have dropped a catch.
[1] He toured North America with Lord Hawke's side in 1894, playing in both first-class matches against the Gentlemen of Philadelphia on the tour and in 1895 made his highest score of 264 not out.
His brothers Henry and Eustace played for Middlesex and for other teams, his father, John Mordaunt, played for MCC and his grandson David Mordaunt was a Sussex and Minor Counties cricketer in the last days of amateurism in the 1950s.
Mordaunt was restricted by business commitments from playing county cricket more regularly.