Great Britain's women won the Olympic test event 2-0 after a bruising encounter with Argentina which did not come without cost.
Leicester defender Crista Cullen scored two second-half penalty corners but went off injured immediately after the second with an ankle problem.
Main striker Alex Danson later went off with a left shoulder injury and was taken straight to the dressing room for treatment.
Cullen did, however, attend the post-match trophy presentation albeit on crutches.
Argentina rarely threatened and GB finished the competition without conceding a goal in all four games.
Great Britain coach Danny Kerry was unhappy that Argentina's approach to the game was not clamped down on by the umpires.
"High-performance teams spend a lot of time looking at videos, having criteria by which we judge things, and I think officiating has to match that," he said.
"They (umpires) have to understand what is going on. That will only come with a performance environment around that.
"There was stuff going on out there today which I think, if you play, watch or coach hockey a lot, you would know exactly what was going on."
Kerry said he expected Cullen's sprained ankle to be "fine" but was unsure about Danson until a more detailed examination had been carried out, which is an obvious concern with the women's Olympic squad set to be named on May 18.