Date of Birth: 
About Mariana Marcelino
- Mariana Grasielly Marcelino (born 16 July 1992) is a Brazilian athlete specialising in the hammer throw.
- She has won a gold medal at the 2017 South American Championships. Her personal best in the event is 67.02 metres set in São Bernardo do Campo in 2017.
- This is the current national record.
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