In 2011 Shin finished second at the Kia Classic; tied for second at the ShopRite LPGA Classic; tied for sixth at the CN Canadian Women's Open; tied for eighth at the LPGA State Farm Classic; tied for 10th at the US Women's Open; tied for 11th at the HSBC Women's Champions; tied for 17th at the Evian Masters; tied for 18th at the Safeway Classic Presented by Coca- Cola; finished 21st at the RICOH Women's British Open; tied for 29th at the RR Donnelley LPGA Founders Cup and the Kraft Nabisco Championship; tied for 34th at the Wegmans LPGA Championship; tied for 35th at the Honda LPGA Thailand.
In 2010, Shin narrowly won the Evian Masters Presented by Societe Generale by just one shot with a score of 14 under. In the same season, Shin won the Mizuno Classic, defeating Yani Tseng by two strokes. She also won the KLPGA Championship, her 21st victory on the KLPGA, and qualified for the KLPGA Hall of Fame. In addition, she won the CyberAgent Ladies on the JLPGA. To complete this successful season, Jiyai Shin also took over as Rolex Rankings No. 1 on July 26, 2010 (Ended August 16, 2010).
Earning her stripes in her first full season as an LPGA member in 2009, Jiyai Shin began the year by becoming a Rolex First-Time Winner at the HSBC Women’s Champions after missing the cut at the SBS Open at Turtle Bay.
Despite her small frame, she was always going to be a force to be reckoned with. Nicknamed "Final Day Queen", for her tenacious ability to close up tournaments, she continued her vein of good form by winning two more trophies and securing the Louise Suggs Rolex Rookie of The Year award comfortably in November.
Furthermore, she led Lorena Ochoa for Player of The Year entering into the LPGA Tour Championship, the final tournament of the season, only to narrowly lose in the end.