Wales had Ross Moriarty sent off late as they rounded off their June tour with a third successive victory, beating Argentina 30-12 in Santa Fe.
Moriarty was dismissed for getting Argentina fly-half Nicolas Sanchez in a headlock beyond regulation time, though Warren Gatland's side already had the match sewn up.
Rhys Patchell put Wales 6-0 up with a pair of penalties before his loose pass was gathered by Josh Adams, who burst through the Argentina defence and crossed in the 11th minute.
A conversion and two further three-pointers from Patchell made it 19-0, but Argentina took advantage of a defensive lapse to get Bautista Delguy in for their first points before the break.
Having worked tirelessly throughout the opening period, Wales' front five continued to control the game after the interval and the reliable Patchell split the posts twice more within 12 minutes of the second half.
Argentina could not cope with the high tempo and good handling from Moriarty, Scott Williams and George North teed up a try for Hallam Amos to make it 30-5 with under an hour on the clock.
Moriarty was red-carded following an altercation with Sanchez and Argentina took some of the sheen off the scoreline when Julian Montoya went over at the death, but Wales' clinical display earned a 2-0 series win after their triumph over South Africa earlier in the month.