[1] Hong decided to join the LPGA Tour for the 2007 season, moving from South Korea to the United States.

Hong placed in the top 10 seven times during the 2010 KLPGA season; her results included a second-place finish in the Woori Investment & Securities Ladies Championship and a tie for fourth at the Korea Women's Open.

[5] In 2013, she played on the LPGA of Japan Tour,[4] in addition to one appearance on the KLPGA, and had one top-10 finish in 16 total events, a tie for ninth in the CyberAgent Ladies Golf Tournament.

[5] Hong gave birth to a son in 2014, and a subsequent shoulder injury hampered her when she attempted to resume her golfing career.

Hong missed the cut 11 times in 27 events the following season, with her highest finish a tie for ninth at the World Ladies Championship.