Date of Birth: 
About Jefferson Santos
- Jefferson de Carvalho Santos (born August 30, 1995) is a Brazilian athlete, a combined events specialist.
- A native of São Paulo, he won the men's decathlon competition at the 2017 South American Championships in Athletics with a personal best score of 8,187 points; due to strong winds in three of the ten events, the result is labelled wind assisted in official records.
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