It has been confirmed that Rival Sons bassist Robin Everhart has left the band.

Everhart said...

"After years of intensive touring I've come to conclusion that I'm not a road warrior and the rock 'n' roll lifestyle is not for me.  I'll miss playing the music we made together and I'm proud of our many accomplishments over the last eight years."

Rival Sons guitarist Scott Holiday said...

"Although we'll miss our pal, everyone is extremely excited and revved up for the next chapter."

Rival Sons will play their upcoming US tour with David Beste filling in on bass and a permanent replacement will be named at a later date.  The band released their third studio album, Head Down, in September of 2012.  The album includes the single "Keep On Swinging."

[SOURCE]