Jaguares change four for Sharks
Injuries and suspensions forced Perez's hand.
The most significant change is at lock where Matías Alemanno will partner with Guido Petti , taking the place of the suspended Thomas Lavanini .
In the other change to the pack Santiago García Botta replaced Lucas Noguera at prop.
In addition Santiago González Iglesias will play as center instead of Jerónimo De la Fuente, with Matias Orlando coming for Joaquin Tuculet.
However, Orlando will play on the wing, with Santiago Cordero moving to fullback.
Jaguares: 15 Santiago Cordero, 14 Matías Orlando, 13 Matías Moroni, 12 Santiago González Iglesias, 11 Emiliano Boffelli, 10 Nicolás Sánchez, 9 Martín Landajo, 8 Leonardo Senatore, 7 Rodrigo Báez, 6 Pablo Matera, 5 Matías Alemanno, 4 Guido Petti, 3 Ramiro Herrera, 2 Agustín Creevy (captain), 1 Santiago García Botta.
Replacements: 16 Julián Montoya, 17 Felipe Arregui, 18 Nahuel Tetaz Chaparro, 19 Javier Ortega Desio, 20 Facundo Isa, 21 Gonzalo Bertranou, 22 Joaquín Paz, 23 Lucas González Amorosino.
Date: Saturday, March 5
Venue: Kings Park, Durban
Kick-off: 19.20 (14.20 Argentina time; 17.20 GMT)
Referee: Jaco Peyper (South Africa)
Assistant referees: Jaco van Heerden (South Africa), Cwengile Jadezweni (South Africa)
TMO: Johan Greeff (South Africa)
Pictures: Steve Haag