list of americas records in swimming 

Statements about this table:
the winning time in the 100 m freestyle event be 46.91
on 28 july 2011 the 200 m individual medley even be swim in 1:54:00
the 50 m freestyle event take place on 18 december 2009
the 1500 m olympic freestyle event take place on august 4 , 2012
the united state win the 200 m butterfly on 29 jul 2009 with a time of 1:51.51
brazil win the 100 m freestyle on 30 jul 2009 with a time of 46.91
the winner of the 28 july , 2011 200 m individual medley have a time of 1:54:00
the winning time of the 50 m freestyle on 18 december , 2009 be 20.91
the 50 m butterfly event take place on 4 august 2012
the united state swim the 100 m butterfly in 1:51.51
the winning time for the 50 m butterfly be 49.82 and be win by an american
the winning time for the 4×100 m freestyle relay take place in rome , italy
the 200 m breaststroke event take place for the first time that year on august 3 , 2012
the 50 m freestyle event take place the day before december 18 , 2009
event
time
nationality
date
meet
location
50 m freestyle
20.91
brazil
18 december 2009
brazilian championships
são paulo , brazil
100 m freestyle
46.91
brazil
30 july 2009
world championships
rome , italy
200 m freestyle
1:42.96
united states
12 august 2008
olympic games
beijing , china
400 m freestyle
3:42.78
united states
10 august 2008
olympic games
beijing , china
800 m freestyle
7:41.86
canada
27 july 2011
world championships
shanghai , china
1500 m freestyle
14:39.63
canada
4 august 2012
olympic games
london , united kingdom
50 m backstroke
24.33
united states
5 december 2008
dutch swim cup
eindhoven , netherlands
event
time
nationality
date
meet
location
100 m backstroke
51.94
united states
8 july 2009
us championships
indianapolis , united states
200 m backstroke
1:51.92
united states
31 july 2009
world championships
rome , italy
50 m breaststroke
26.76
brazil
29 july 2009
world championships
rome , italy
100 m breaststroke
58.96
united states
26 july 2009
world championships
rome , italy
200 m breaststroke
2:07.42
united states
30 july 2009
world championships
rome , italy
50 m butterfly
22.76
brazil
26 april 2012
maria lenk trophy
rio de janeiro , brazil
100 m butterfly
49.82
united states
1 august 2009
world championships
rome , italy
event
time
nationality
date
meet
location
200 m butterfly
1:51.51
united states
29 july 2009
world championships
rome , italy
200 m individual medley
1:54.00
united states
28 july 2011
world championships
shanghai , china
400 m individual medley
4:03.84
united states
10 august 2008
olympic games
beijing , china
4100 m freestyle relay
3:08.24
united states
11 august 2008
olympic games
beijing , china
4200 m freestyle relay
6:58.55
united states
31 july 2009
world championships
rome , italy
4100 m medley relay
3:27.28
united states
2 august 2009
world championships
rome , italy