What single did John Mayer win a Grammy Award?

John Mayer has won seven Grammy Awards, but none of them were for singles. His wins were in the following categories:

* 2003: Best Male Pop Vocal Performance for "Your Body Is a Wonderland"

* 2005: Best Pop Vocal Album for "Heavier Things"

* 2007: Best Solo Rock Vocal Performance for "Gravity"

* 2008: Best Male Pop Vocal Performance for "Waiting on the World to Change"

* 2010: Best Instrumental Pop Performance for "Battlestar Galactica Theme" (with Herbie Hancock)

* 2012: Best Pop Duo/Group Performance for "Half of My Heart" (with Taylor Swift)

* 2015: Best Country Duo/Group Performance for "Somewhere Over the Rainbow" (with Keith Urban)