1970 US Open – Mixed doubles

Marty Riessen and Margaret Court were the defending champions and successfully defended their title, defeating Frew McMillan and Judy Dalton 6–4, 6–4 in the final.

Mixed doubles
1970 US Open
Champions	Marty Riessen Margaret Court
Runners-up	Frew McMillan Judy Dalton
Score	6–4, 6–4
Draw	34
Seeds	4

Main article: 1970 US Open (tennis)

This was the first edition to feature a tie-break. It was used a sudden-death tie-break in all sets, winning the first to reach 5 points.

Seeds

1. Marty Riessen / Margaret Court (champions)
2. Alex Metreveli / Olga Morozova (second round)
3. Frew McMillan / Judy Dalton (final)
4. Dennis Ralston / Françoise Dürr (semifinals)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• SE = Special exempt
• PR = Protected ranking
• ITF = ITF entry
• JE = Junior exempt
• w/o = Walkover
• r = Retired
• d = Defaulted
• SR = Special ranking

Finals

	Quarterfinals							Semifinals							Final
	1	Marty Riessen Margaret Court	7	3	6
		Tom Gorman Denise Carter	5	6	2
								1	Marty Riessen Margaret Court	6	6	6
								4	Dennis Ralston Françoise Dürr	3	7	3
	4	Dennis Ralston Françoise Dürr	6	6
		Bob Carmichael Gail Chanfreau	3	1
															1	Marty Riessen Margaret Court	6	6
															3	Frew McMillan Judy Dalton	4	4
		Cliff Richey Nancy Richey	1	3
	3	Frew McMillan Judy Dalton	6	6
								3	Frew McMillan Judy Dalton	7	6
									Roger Taylor Nell Truman	5	3
		Owen Davidson Rosie Casals	6	6
		Roger Taylor Nell Truman	7	7

Top half

Section 1

	First round							Second round							Third round							Quarterfinals
								1	M Riessen M Court	7	6
									B Howe D Hard	6	0
															1	M Riessen M Court	6	6
																L Miller M-A Curtis	2	2
									L Miller M-A Curtis	6	6
									G Taylor B-A Hansen	3	4
																						1	M Riessen M Court	7	3	6
																							T Gorman D Carter	5	6	2
									P Guzmán E Emmanuel	5	6	6
									O Bengtson C Sandberg	7	3	4
																P Guzmán E Emmanuel	4	1
																T Gorman D Carter	6	6
									D Dell I Bentzer	2	5
									T Gorman D Carter	6	7

Section 2

	First round							Second round							Third round							Quarterfinals
								4	D Ralston F Dürr	6	3	7
									P Cornejo P Teeguarden	3	6	5
															4	D Ralston F Dürr	6	7
																E Scott C Martinez	2	6
									S Ross P Bartkowicz	4	4
									E Scott C Martinez	6	6
																						4	D Ralston F Dürr	6	6
																							B Carmichael G Chanfreau	3	1
									B Carmichael G Chanfreau	6	6
									B Salembier P Hogan	3	0
																B Carmichael G Chanfreau	w/o
																D Crealy K Melville
									R Ruffels V Wade	3	7	6
		K Stuart K Harris	2	3					D Crealy K Melville	6	6	7
		D Crealy K Melville	6	6

Bottom half

Section 3

	First round							Second round							Third round							Quarterfinals
		J-B Chanfreau L Hunt	6	6
		V Korotkov M Kroschina	2	3					J-B Chanfreau L Hunt	4	6	5
									R Russell S Holdsworth	6	3	7
																R Russell S Holdsworth
																C Richey N Richey	w/o
									C Richey N Richey	6	6
									P Fishbach M Aschner	2	4
																							C Richey N Richey	1	3
																						3	F McMillan J Dalton	6	6
									A Stone P Walkden	6	7
									A Olmedo K Kemmer	2	6
																A Stone P Walkden	3	5
															3	F McMillan J Dalton	6	7
									M Machette S Walsh	6	1	1
								3	F McMillan J Dalton	4	6	6

Section 4

	First round							Second round							Third round							Quarterfinals
									F Stolle H Gourlay	4	1
									B Fairlie K Pigeon	6	6
																B Fairlie K Pigeon	2	6
																O Davidson R Casals	6	7
									O Davidson R Casals	6	6
									MA Ilahi P Stewart	0	1
																							O Davidson R Casals	6	6
																							R Taylor N Truman	7	7
									J Fillol K Harter	7	6
									P Curtis S Johnson	6	4
																J Fillol K Harter	5	4
																R Taylor N Truman	7	6
									R Taylor N Truman	7	6
								2	A Metreveli O Morozova	5	2

External links

• 1970 US Open – Doubles draws and results at the International Tennis Federation