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2013 World Indoor Top 20 Compiled by Mirko Jalava, Tilastopaja Oy. Text version here.

Men
400 m
1	45.15	NR		Deon Lendore	TRI	28 Oct 92		1h1	SEC	Fayetteville AR	23 Feb
2	45.64			Mike Berry	USA	10 Dec 91		2h1	NCAA	Fayetteville AR	8 Mar
3	45.66	NR		Pavel Maslák	CZE	21 Feb 91		1	EC	Göteborg	3 Mar
4	45.67			Hugh Graham	USA	10 Oct 92		2	SEC	Fayetteville AR	24 Feb
5	45.72			Errol Nolan	JAM	18 Aug 91	178/73	1h2	NCAA	Fayetteville AR	8 Mar
6	45.82A			Jeremy Wariner	USA	31 Jan 84	188/67	1	NC	Albuquerque NM	3 Mar
7	45.92			Pat Feeney	USA	29 Dec 91		3h1	NCAA	Fayetteville AR	8 Mar
8	45.97			Najee Glass	USA	12 Jun 94		2h2	NCAA	Fayetteville AR	8 Mar
9	46.00			Pavel Trenikhin	RUS	24 Mar 86		1s2	EC	Göteborg	2 Mar
10	46.02			Vernon Norwood	USA	10 Apr 92	187/77	1	Tyson Inv	Fayetteville AR	8 Feb
11	46.07			Brian Gregan	IRL	31 Dec 89		1	AAIG	Athlone	27 Jan
12	46.09			Anton Kokorin	RUS	5 Apr 87	186/77	3rB	NCAA	Fayetteville AR	9 Mar
13	46.14			Akheem Gauntlett	JAM	26 Aug 90		1		Fayetteville AR	1 Mar
14	46.21			Nigel Levine	GBR	30 Apr 89	174/68	2	EC	Göteborg	3 Mar
15	46.22			Richard Strachan	GBR	18 Nov 86	175/73	1h3	BirmG	Birmingham	2 Feb
16	46.23A			Jarrin Solomon	TRI	11 Jan 86	175/70	1	Kirby	Albuquerque NM	8 Feb
17	46.25			Brycen Spratling	USA	10 Mar 92		1	Nat Inv	State College PA	26 Jan
18	46.26			David Verburg	USA	14 May 91	168/64	1h2	Coll Inv	New York NY	1 Feb
19	46.30			Tabarie Henry	ISV	1 Dec 87	185/75	1	TAMU Chall	College Station TX	26 Jan
20	46.34			Quentin Iglehart-Summers	USA	15 Jun 87		2	TAMU Chall	College Station TX	26 Jan
Oversized track
	45.83			David Verburg	USA	14 May 91	168/64	1	SPIRE Inv	Geneva OH	9 Feb
	45.92			Brycen Spratling	USA	10 Mar 92		1	Wilson	Notre Dame IN	2 Mar
	46.05			Chris Giesting	USA	10 Dec 92		1rB	Wilson	Notre Dame IN	2 Mar
	46.07			Stephon Pamilton	USA	18 Sep 91		1	Big 10	Geneva OH	23 Feb
	46.23			Brunson Miller	USA	10 Feb 91		2	Wilson	Notre Dame IN	2 Mar
	46.25			Nick Efkamp	USA	19 Sep 92		1	Big 12	Ames IA	24 Feb
	46.31			Carvin Nkanata	KEN	6 May 91		3	SPIRE Inv	Geneva OH	9 Feb