The match had started on wet ground and José Tolini converted an beforetime penalty to donate Argentina the lead, but with the match still going and the pitch arid,parched, Cocapuras dominated.
Australia needed until the final minute of the first quarter to hit the ball, but it counted when Govers converted the second in a series of corner kicks to put his side up in the first half.
With the field accelerating in the second quarter, Cocopauras was competent to use his rapid ball movement to poke holes in the Argentina defence, which was forced back into his own half.
Tom Wickham gave Australia the lead with a cross kick from Tim Brand, who found the defense line from close range on his back stick in the 21st minute.
From there, Australia put Argentina under heavy pressure for most of the second quarter and Govers made it 3-1 with a penalty three minutes later.
Kookaburra Lachie Sharp scored one of the team’s goals at the Olympics to make it 4-1. Australian speedball found Wickham on the backline on the left, who took it back to a 45-degree angle where Sharpe met it and swept it for the first time lofty into the net.
“Having the score sheet in any match is a pleasing feeling,” Sharpe said. “If you come to the right place and have pleasing relationships with the men around you, you are sure to hit a goal, so that’s distinguished”
Australia maintained control in the second half and had 24 entries in the circuit versus just seven from Argentina, who got a late consolation goal from Maiko Casella Schuth.
Kookaburras will meet New Zealand on Wednesday evening, where they will secure a triumph or a tie for the top seed from Group B in the quarter-finals.