col : rank | name | nationality | time row 1 : nan | mark henderson | united states | 54.11 row 2 : nan | eduardo piccinini | brazil | 54.63 row 3 : nan | brian alderman | united states | 54.75 row 4 : 4.0 | francisco sanchez | venezuela | 54.99 row 5 : 5.0 | edward parenti | canada | 55.23 row 6 : 6.0 | diego cuenca | colombia | 55.67 row 7 : 7.0 | jose meolans | argentina | 55.91 row 8 : 8.0 | ruben calderon | el salvador | 56.04
who was the last place swimmer?
ruben calderon
Rank Name Nationality Time
who was the last place swimmer?
nan Mark Henderson United States 54.11
nan Eduardo Piccinini Brazil 54.63
nan Brian Alderman United States 54.75
4.0 Francisco Sanchez Venezuela 54.99
5.0 Edward Parenti Canada 55.23
6.0 Diego Cuenca Colombia 55.67
7.0 Jose Meolans Argentina 55.91
8.0 Ruben Calderon El Salvador 56.04
Ruben Calderon
who was the last place swimmer? || 