Argentine midfielder Marcos Mondaini made a good impression on Chivas USA head coach Robin Fraser in his MLS debut on the weekend.

The 26-year old former Boca Juniors and Nacional man was brilliant in his new club's 3-2 loss to Sporting Kansas City on Saturday and his performance received rave reviews from Fraser.

"He's been getting better from the first day that he got here, to be honest," said Fraser. "He's an intelligent, crafty, quick player who has been in a number of big games, and I thought for his first MLS game he was completely unfazed."

Mondaini admitted it was nice to get his MLS debut out of the way but said he was saddened by the result.

"It's a little bit weird because I'm happy to play my first game for Chivas, but I'm sad about the result," said Mondaini.

"We need to keep our heads up and keep working. It was an open game especially for us, but unfortunately we allowed some unfortunate goals, so we have to fix our mistakes."