Jobb,
It's a title "Americans make medal stand, take silver" Titles are not always gramatically correct.
In this case, it is simply saying that an American athlete or team has won a silver medal. The "medal stand" refers to the medal standings, a list of how many medals each country has won. You can see the
medal standings here.
This might help you further:
GuruNet.com
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stand·ing (stan'ding)
n.
1. Status with respect to rank, reputation, or position in society or a profession.
2. High reputation; esteem: a person of standing in the community.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2003 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
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On further reflection, it might also mean that the American athlete or team was presented with a silver medal at the "medal stand", a place where medals are awarded.
In the article this sentence--"After two decades and too many disappointments to count, the Americans were down to one routine on the high bar Monday to determine whether they would be in the medals ceremony ... or just watch it again."--seems to indicate that they are stressing the ceremony at the "medal stand."
In any event, the key take-away is that the Americans won a silver medal.
I hope that helps.
MountainHiker