Outfielder Zach Collier has a slash line of .228/.307/.316 in his 40 games for Double-A Reading. (Flickr)

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.