Singles
1921 Australasian Championships
Champion	Rice Gemmell
Runner-up	Alfred Hedeman
Score	7–5, 6–1, 6–4
Draw	22

Rice Gemmell defeated Alfred Hedeman 7–5, 6–1, 6–4 in the final to win the men's singles tennis title at the 1921 Australasian Championships.

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• r = Retired

	Quarterfinals									Semifinals									Finals
	Rice Gemmell		6	6	6
	E. M. Barker		0	3	0					Rice Gemmell		6	6	6
	Clarence Treloar		6	6	6					Clarence Treloar		2	1	3
	W. Henville		3	2	2														Rice Gemmell		7	6	6
	Alfred Hedeman		6	6	6														Alfred Hedeman		5	1	4
	Norman Kenneth Brearley		2	1	3					Alfred Hedeman		6	3	6	6
	Keith McDougall		2	12	6	6				Keith A. McDougall		4	6	1	2
	W. Hayman		6	10	2	0

Top half

	First round									Second round									Quarterfinals									Semifinals
											R. T. H. Gemmell	6	6	4	6
											D. Cameron	3	1	6	0
																				R. T. H. Gemmell	6	6	6
																				E. M. Barker	0	3	0
											E. M. Barker	4	6	6	6
											Holliday	6	2	4	2
																													R. T. H. Gemmell	6	6	6
		C. L. Treloar	6	3	6	6																							C. L. Treloar	2	1	3
		William McLeod Cleland	4	6	1	4					C. L. Treloar	7	6	6
		Leonard McDaniell	6	6	6						Leonard McDaniell	5	2	4
		Malcolm Plaistowe	2	4	0															C. L. Treloar	6	6	6
		W. Henville	3	2	8	rtd.														W. Henville	3	2	2
		P. Mills	6	6	6						W. Henville	6	6	7
		S. Davis	w/o								S.Davis	1	3	5
		Edward W. Stokes

Bottom half

	First round									Second round									Quarterfinals									Semifinals
											A. H. Hedeman	6	4	6	6
											Forsaith	4	6	1	3
																				A. H. Hedeman	6	6	6
		N. Brearley	6	6	6															Norman Kenneth Brearley	2	1	3
		Sturm	4	3	1						N. Brearley	3	3	11	6	6
		Linwood	6	6	6						Linwood	6	6	9	2	4
		Fairbridge	2	0	0																								A. H. Hedeman	6	3	6	6
																													K. A. McDougall	4	6	1	2
											W. Hayman	2	6	7	5	6
											McGibbon	6	2	5	7	2
																				K. A. McDougall	2	12	6	6
																				W. Hayman	6	10	2	0
											K. A. McDougall	4	3	6	6	6
											Robert Whitelock Phillips	6	6	2	3	4

External links

• Grand Slam Tennis Archive – Australasian Open 1921
• Source for the draw at ausopen.com