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6/30/2014 3:06 P.M. ET

Collier outrighted to Double-A Reading

PHILADELPHIA -- The Phillies announced Monday that outfielder Zach Collier has cleared waivers and has been outrighted to Double-A Reading.

Collier had been designated for assignment over the weekend to make room for right-hander Sean O'Sullivan on the 40-man roster.

Collier is hitting .228 with a .623 OPS in 40 games this season with Reading. He was the 34th overall pick in the 2008 First-Year Player Draft.

Todd Zolecki is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.