2007 was an off year. She finished out of the top
90 on the money list, but fortunately still had an exempt card thanks
to her 2006 win. Yim continued to struggle in 2008; by the end of
the season, she had not even managed a top 30 finish on tour all
year. Fortunately, she still maintained good status for 2009 thanks
to her previous victory. However, after a poor 2009 where she made
only 11 thousand dollars, Sung Ah's status for 2010 was reduced
to category 15.
Yim returned to Korea full time in 2010. She had
a so so season, finishing 26th on the money list with a little more
than 100 million won earned. She did contend in a few events, however,
notably at the Korean Women's Open, where she finished third behind
winner Soo Jin Yang. She also notched a third at the year's final
Major, the KB Star Tour Grand Finale, which was won by another big
star, Bo Mee Lee.
Yim had a worse season in 2011. She only had two
top tens, a fifth place at the penultimate event of the year, and
a 10th place. She finished 43rd on the money list. She was slightly
worse in 2012, finishing 48th on the money list. Her best finish
that year was a 4th.
Sung Ah was 64th on the 2013 KLPGA money list.
Her best finish was a 13th. In 2014 and 2015, however, she only
played a few events, and missed the cut in all of them. It's possible
she was dealing with injuries.
In 2016, she returned to action, playing in the
minor leagues in Korea. She advanced back to the KLPGA for the 2017
season. But she didn't have much success in 2017. She finished just
108th on the money list, with less than 20 million won earned. She
made just six cuts all year, with her best finish a 44th place.
In 2018, as of June, she does not seem to have
played golf on any tour, and it is possible she has retired.