Gulbis is of Latvian descent, her last name meaning swan in the Latvian language. She played in her first LPGA tour event as an amateur at the age of 14 (handicap of 2). She attended Granite Bay High School and graduated when she was 16. She turned professional at age 18 after playing for one season on the women's golf team at the University of Arizona.
Gulbis did not win a tournament in the first five years of her professional career but still finished sixth on the LPGA money list in 2005 with over $1 million (U.S.) in earnings and played on the winning United States Solheim Cup team. She placed in the top-10 in four consecutive major championships from the 2005 LPGA Championship to the 2006 Kraft Nabisco Championship.
Gulbis' first professional win came in 2007 at the Evian Masters where she defeated Jeong Jang in a playoff to claim the winner's share of the $3,000,000 purse.
