Bert St. John

Cecil Bertram "Bert" St. John (1879 – 19 September 1932) was an Australian tennis player.
St. John won the doubles title alongside Pat O'Hara Wood at the Australasian Championships, the future Australian Open, in 1923, and reached three more finals at the tournament, losing in singles to Pat O'Hara Wood in 1923, in doubles alongside Gordon Lowe in 1915, and in mixed doubles alongside Margaret Molesworth in 1923.
He is the only player to have reached a major tournament final, in singles or doubles, with only one hand.

Singles (1 runner-up)

Outcome	Year	Championship	Opponent in final	Score in final
Runner-up	1923	Australasian Championships	Pat O'Hara Wood	1–6, 1–6, 3–6

Doubles (1 title, 1 runner-up)

Outcome	Year	Championship	Partner	Opponents in final	Score in final
Runner-up	1915	Australasian Championships	Gordon Lowe	Clarence Todd Horace Rice	6–8, 4–6, 9–7, 3–6
Winner	1923	Australasian Championships	Pat O'Hara Wood	Dudley Bullough Horace Rice	6–4, 6–3, 3–6, 6–0

Mixed doubles (1 runner-up)

Outcome	Year	Championship	Partner	Opponents in final	Score in final
Runner-up	1923	Australasian Championships	Margaret Molesworth	Sylvia Lance Harper Horace Rice	6–2, 4–6, 4–6