In 2007, the Japanese golf star recorded six top-10 finishes, including a second-place finish at the HSBC Women's World Match Play Championship, where she lost to Seon Hwa Lee in the championship match; she also crossed the $1 million mark in career earnings.

In 2008, Miyazato recorded three top-10 finishes: a tie for fourth at the P&G Beauty NW Arkansas Championship Presented by John Q. Hammons, a tie for fifth at the RICOH Women抯 British Open and a tie for sixth at the Wegmans LPGA.

In 2009, Ai Miyazato became a Rolex First-Time Winner at the Evian Masters Presented by Societe Generale, where she defeated Sophie Gustafson in a one-hole, sudden-death playoff; finished second at the Samsung World Championship and tied for second at the CN Canadian Women's Open; tied for third at the RICOH Women's British Open, tying her career-best finish at a major championship.

In 2010, Miyazato became the first player since 1966 to win consecutive season-opening events with the Honda PTT LPGA Thailand, where she won by one stroke over Suzann Pettersen with a career-low and tournament-record 63 in the final round here at  the HSBC Women's Champions. She also won the Tres Marias Championship, ShopRite Classic and Safeway Classic Presented by Coca- Cola.

Miyazato won her seventh-career LPGA victory at the Evian Masters in 2011 and carried on this form with 9 top 10 finishes in 2012. These achievements saw her break the $7 million mark in career earnings.