Her good performance on the LPGA Tour improved her priority status on the LPGA Tour and gave her entry to more tournaments in the second half of the 2011 LPGA season. On September 18, 2011, Joh had her best yet finish on the LPGA Tour, as the runner-up at the Navistar LPGA Classic, five strokes behind winner Lexi Thompson. She earned $120,057 for the solo second-place finish, her largest payday to date as a professional. Her 2011 season earnings on the LPGA Tour were $237,365 from participating in 14 tournaments. This put her in 41st place on the season-ending money list, enough to earn full privileges on the LPGA Tour for the 2012 season. In 2012, Joh's rookie year on the LPGA, she finished 101st on the official LPGA money list which gave her limited playing privileges on the LPGA in 2013. She retained status on the Symetra Tour. Joh was diagnosed with having a malignant melanoma in January 2017. She returned to the LPGA Tour two months later. She was the winner of the inaugural European eTour match at Pinehurst #2 in 2020, defeating Jane Park 2 up.  ^ Tournament was shortened to 36 holes due to rain. "Results not in chronological order before 2019." ^ The Evian Championship was added as a major in 2013. LA = Low amateur CUT = missed the half-way cut "T" = tied    Amateur