Riveros keen to experience first win with Sunderland
Having just arrived in the UK from South America following the World Cup, Riveros admits he is unfamiliar with West Brom - though he says his side's task is certainly clear.
He explained to safc.com: "The truth is West Brom are a team I do not know a great deal about, but I have seen some of their bigger matches on TV in the past.
"I know they are a good team and I know it is an important game for us.
"I hope that this Saturday we can work at our best to win the game, because in reality we should have won the game we have just played.
"Unfortunately it was not the result we wanted."