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2012  World  Top 20 Compiled by Mirko Jalava, Tilastopaja Oy. Text version here.

Men
4 x 100 m
1	36.84	WR		Jamaica				1	OG	London	11 Aug
				Nesta Carter, Michael Frater, Yohan Blake, Usain Bolt
3	37.04	AR		United States				2	OG	London	11 Aug
				Trell Kimmons, Justin Gatlin, Tyson Gay, Ryan Bailey
5	38.02	NR		Germany				1		Weinheim	27 Jul
				Julian Reus, Tobias Unger, Alexander Kosenkow, Lucas Jakubczyk
7	38.05			Canada				2h1	OG	London	10 Aug
				Gavin Smellie, Seyi Smith, Jared Connaughton, Justyn Warner
9	38.07			Japan				2h2	OG	London	10 Aug
				Ryota Yamagata, Masashi Eriguchi, Shinji Takahira, Shota Iizuka
11	38.10			Trinidad & Tobago				3h2	OG	London	10 Aug
				Richard Thompson, Marc Burns, Emmanuel Callender, Keston Bledman
13	38.15			France				4h2	OG	London	10 Aug
				Jimmy Vicaut, Christophe Lemaitre, Pierre-Alexis Pessonneaux, Ronald Pognon
15	38.17	AR		Australia				5h2	OG	London	10 Aug
				Anthony Alozie, Isaac Ntiamoah, Andrew McCabe, Joshua Ross
17	38.29	NR		Netherlands				3h1	OG	London	10 Aug
				Brian Mariano, Churandy Martina, Giovanni Codrington, Patrick van Luijk
19	38.30			Great Britain				3	WK	Zürich	30 Aug
				Christian Malcolm, Dwain Chambers, Daniel Talbot, Adam Gemili
21	38.31	NR		Poland				6h2	OG	London	10 Aug
				Kamil Masztak, Dariusz Kuć, Robert Kubaczyk, Kamil Kryński
23	38.35			Brazil				4h1	OG	London	10 Aug
				Aldemir Gomes da Silva, Sandro Viana, Nilson André, Bruno de Barros
25	38.38	NR		China				5h1	OG	London	10 Aug
				Guo Fan, Liang Jiahong, Su Bingtian, Zhang Peimeng
27	38.41	NR		Saint Kitts & Nevis				6h1	OG	London	10 Aug
				Roland Lestrod, Jason Rogers, Antoine Adams, BJ Lawrence
29	38.47	NR		Hong Kong				1	Open Ch	Taipei	26 May
				Tang Yik Chun, Lai Chun Ho, Ng Ka Fung, Tsui Chi Ho