The action Tuesday morning centers on track and field, and a couple of medal events will take place in the early going.
One event to watch is the triple jump, which features a pair of stellar U.S. performers. Christian Taylor won the gold in London four years ago, while Will Claye took the silver. Both are in strong form this time around and have an excellent chance to return to the medal stand.
The women's discus will also be contested, and look for Sandra Perkovic of Croatia to put her stamp on this event.
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The two U.