Most notably, she won the All England Open Badminton Championships women's singles title three times in 2008, 2010, and 2013 – the last of these being her final tournament before retirement.

She made her international debut in 1996 at the Denmark Open, and since finishing her education in 1999, she started playing badminton professionally full time.

At the BWF Super Series, she won the 2007 Japan Open, beating all Chinese-born players from the first match, including the 1st seed, Zhang Ning, in the quarterfinal.

She won the silver medal at the 2008 European Badminton Championships after losing to Huaiwen Xu in the final with a rubber set.

[3] After progressing no further than the quarter finals in the Super Series tournaments of 2012 and 2013, she ended her career high by winning the prestigious All England Open against 18-year-old Ratchanok Intanon of Thailand.

In August 2013, Baun played at the Indian Badminton League for the Mumbai Masters team, earning a reported salary of $30,000.