The Lions will be without the services of form centre Rohan Janse van Rensburg for their game at the Jaguares due to personal reasons.
Janse van Rensburg's mother passed away last week and although he wanted to face the Waratahs, it's been decided he won't travel to Argentina.
"Rohan will definitely not go to Argentina," head coach Johan Ackermann said of the player who currently tops this year's Super Rugby's try chart.
"We'll let him have his moment with his family and we have to trust the rest of our squad to fill in that position.
"He came off a bit of an injury and he has to look after that and honour his mom on Wednesday and then he'll join us the week after."