On a trip to Rio, Hannemann discussed the Olympics with members of her home course, Gavea Golf and Country Club. Hannemann said that before she left, one of the men pulled her aside and told her: “You can’t let this opportunity go by. Whatever you need, go do it, and we’ll help you.”

Hannemann began her professional career in 2002 on the Futures Tour, now known as the Symetra Tour, the development tour for the L.P.G.A. She won two titles in 2003 and finished third on the Futures Tour money list to earn an exempt L.P.G.A. status for the 2004 season.

She went on to earn nearly $500,000 on the L.P.G.A. Tour, but she played her last competitive round in 2009, succumbing to the pain in her right wrist. She did not touch a club in 2010 or 2011. She settled in Boston, married Grossman and gave birth to their daughters, Stella in 2012 and Luiza in 2014.

But with her wrist pain gone and a new goal in sight, Hannemann decided to return to the Symetra Tour this year, and she headed to Florida in March.