| | Event type

4 × 100 metres Medley Relay, Mixed Youth

Date	20 August 2010
Status	YOG
Location	Singapore Sports School, Singapore
Participants	75 from 16 countries

Pos	Competitors	NOC	R1	Final
1	People's Republic of China	CHN	3:56.78 (1 h1)	3:52.52 (1)	Gold
	Bai Anqi • He Jianbin • Liu Lan • Sun Bowei • Tang Yi • Wang Ximing
2	Russian Federation	RUS	4:00.67 (1 h2)	3:55.29 (2)	Silver
	Yekaterina Andreyeva • Aleksey Atsapkin • Kristina Kochetkova • Ilya Lemayev • Anton Lobanov • Aleksandra Papusha • Andrey Ushakov
3	Australia	AUS	3:59.14 (1 h3)	3:55.63 (3)	Bronze
	Max Ackermann • Justin James • Zoe Johnson • Emma McKeon • Nick Schafer • Emily Selig • Kenneth To • Madi Wilson
4	France	FRA	4:00.82 (2 h2)	3:56.64 (4)
	Mathilde Cini • Jordan Coelho • Marie Jugnet • Thomas Rabeisen • Mehdy Metella
5	Canada	CAN	4:02.69 (3 h2)	4:02.22 (5)
	Jeremy Bagshaw • Chad Bobrosky • Lindsay Delmar • Tera Van Beilen • Rachel Nicol
6	United States	USA	4:04.29 (4 h2)	4:02.90 (6)
	Kaitlyn Jones • Jordan Mattern • Erich Peske • Austin Ringquist
7	Japan	JPN	4:06.13 (3 h3)	4:06.18 (7)
	Mayuko Okada • Tatsunari Shoda • Takahiro Tsutsumi • Yukiko Watanabe
8	Germany	GER	4:02.56 (2 h3)	– (DQ)
	Christian Diener • Lena Kalla • Kevin Leithold • Lina Rathsack
9	South Africa	RSA	4:06.14 (5 h2)	–
	Dylan Bosch • Oneida Cooper • Chad le Clos • Kyla Ferreira
10	Spain	ESP	4:07.05 (2 h1)	–
	Teresa Gutiérrez • Judit Ignacio • Adrián Mantas • Aitor Martínez
11	Brazil	BRA	4:08.25 (4 h3)	–
	Vinícius Borges • Pedro Costa • Bruna Rocha • Júlia Gerotto
12	Singapore	SGP	4:08.94 (5 h3)	–
	Rainer Ng • Cheryl Lim • Pang Sheng Jun • Adeline Winata
13	Hong Kong, China	HKG	4:14.66 (3 h1)	–
	Kent Cheung • Yvette Kong • Jeffrey Lum • Yu Wai Ting
14	Iceland	ISL	4:18.81 (6 h2)	–
	Bryndís Hansen • Ingibjörg Jónsdóttir • Anton McKee • Hrafn Traustason
15	Trinidad and Tobago	TTO	4:20.21 (6 h3)	–
	Christian Homer • Kimberlee John-Williams • Cadell Lyons • Khadeja Phillip
16	Serbia	SRB	4:21.02 (4 h1)	–
	Stefan Šorak • Marija Joksimović • Katarina Simonović • Velimir Stjepanović
DNS	Italy	ITA	– (DNS h1)	–

Round One

Date	20 August 2010 — 10:23
Format	Top 8 times advanced to the final round.

Heat #1

Time	10:23

Pos	Competitors	NOC	Time
1	People's Republic of China	CHN	3:56.78	Q
	Tang Yi		–
	Wang Ximing		–
	Bai Anqi		–
	Sun Bowei		–
2	Spain	ESP	4:07.05
	Teresa Gutiérrez		–
	Judit Ignacio		–
	Adrián Mantas		–
	Aitor Martínez		–
3	Hong Kong, China	HKG	4:14.66
	Kent Cheung		–
	Yvette Kong		–
	Jeffrey Lum		–
	Yu Wai Ting		–
4	Serbia	SRB	4:21.02
	Stefan Šorak		–
	Marija Joksimović		–
	Katarina Simonović		–
	Velimir Stjepanović		–
DNS	Italy	ITA	–

Heat #2

Pos	Competitors	NOC	Time
1	Russian Federation	RUS	4:00.67	Q
	Aleksandra Papusha		–
	Aleksey Atsapkin		–
	Ilya Lemayev		–
	Yekaterina Andreyeva		–
2	France	FRA	4:00.82	Q
	Mathilde Cini		–
	Marie Jugnet		–
	Mehdy Metella		–
	Thomas Rabeisen		–
3	Canada	CAN	4:02.69	Q
	Jeremy Bagshaw		–
	Chad Bobrosky		–
	Lindsay Delmar		–
	Rachel Nicol		–
4	United States	USA	4:04.29	Q
	Kaitlyn Jones		–
	Austin Ringquist		–
	Erich Peske		–
	Jordan Mattern		–
5	South Africa	RSA	4:06.14
	Dylan Bosch		–
	Oneida Cooper		–
	Chad le Clos		–
	Kyla Ferreira		–
6	Iceland	ISL	4:18.81
	Bryndís Hansen		–
	Ingibjörg Jónsdóttir		–
	Anton McKee		–
	Hrafn Traustason		–

Heat #3

Pos	Competitors	NOC	Time
1	Australia	AUS	3:59.14	Q
	Zoe Johnson		–
	Nick Schafer		–
	Madi Wilson		–
	Justin James		–
2	Germany	GER	4:02.56	Q
	Christian Diener		–
	Lena Kalla		–
	Lina Rathsack		–
	Kevin Leithold		–
3	Japan	JPN	4:06.13	Q
	Yukiko Watanabe		–
	Tatsunari Shoda		–
	Mayuko Okada		–
	Takahiro Tsutsumi		–
4	Brazil	BRA	4:08.25
	Vinícius Borges		–
	Pedro Costa		–
	Bruna Rocha		–
	Júlia Gerotto		–
5	Singapore	SGP	4:08.94
	Rainer Ng		–
	Cheryl Lim		–
	Pang Sheng Jun		–
	Adeline Winata		–
6	Trinidad and Tobago	TTO	4:20.21
	Christian Homer		–
	Kimberlee John-Williams		–
	Cadell Lyons		–
	Khadeja Phillip		–

Final

Date	20 August 2010 — 20:18

Pos	Competitors	NOC	Time
1	People's Republic of China	CHN	3:52.52
	He Jianbin		–
	Liu Lan		–
	Tang Yi		–
	Wang Ximing		–
2	Russian Federation	RUS	3:55.29
	Kristina Kochetkova		–
	Anton Lobanov		–
	Aleksandra Papusha		–
	Andrey Ushakov		–
3	Australia	AUS	3:55.63
	Max Ackermann		–
	Emma McKeon		–
	Emily Selig		–
	Kenneth To		–
4	France	FRA	3:56.64
	Mathilde Cini		–
	Jordan Coelho		–
	Marie Jugnet		–
	Thomas Rabeisen		–
5	Canada	CAN	4:02.22
	Jeremy Bagshaw		–
	Chad Bobrosky		–
	Lindsay Delmar		–
	Tera Van Beilen		–
6	United States	USA	4:02.90
	Kaitlyn Jones		–
	Jordan Mattern		–
	Erich Peske		–
	Austin Ringquist		–
7	Japan	JPN	4:06.18
	Mayuko Okada		–
	Tatsunari Shoda		–
	Takahiro Tsutsumi		–
	Yukiko Watanabe		–
DQ	Germany	GER	–
	Christian Diener		–
	Lena Kalla		–
	Kevin Leithold		–
	Lina Rathsack		–