Victorious Jaguares baffled by ref's decision
Williams showed extreme patience with the Blues, who were clinging to a 13-5 lead when they repeatedly infringed on their own line.
The half rolled on for an extra seven minutes as the Jaguares continually opted for scrums to force a try.
Being denied a seven-point penalty try seemed to fire up the Jaguares in the second half as they pulled off a 20-13 win for their first victory over a New Zealand side.
"In that succession of scrums at the end of the first half we were confident that they were going to give us the penalty try," said hooker Agustin Creevy.
"We are going to see the images later, but hey, at that moment we were dominating them a lot and well and we really wanted to get the penalty try.
"There were four or five penalties in a row."
The Jaguares are currently unbeaten on the Australasian tour after wins against the Melbourne Rebels, Brumbies and the Blues.
They finish their tour against the Chiefs on Friday.
Source: AFP