Phillies claim reliever Roberts off waivers

PHILADELPHIA -- The Phillies acquired some bullpen depth Sunday when they claimed left-hander Ken Roberts off waivers from the Rockies.

Roberts has been optioned to Triple-A Lehigh Valley, but he could join the Phillies on Tuesday when rosters expand. The Phillies are thin on left-handed relievers. They traded Jake Diekman to Texas in July. They designated Cesar Jimenez for assignment recently, and the Brewers claimed him off waivers. Then last week Elvis Araujo strained his left groin and landed on the disabled list.

Roberts, 27, pitched the last six seasons (2010-15) primarily in the Rockies' Minor League system, going 22-10 with a 2.61 ERA in 216 appearances (two starts). He went 1-3 record with a 5.12 ERA this season for Triple-A Albuquerque, but appeared in only 23 games after spending time on the DL for left elbow inflammation.

He posted a 5.79 ERA in nine appearances this year with the Rockies.

The Rockies designated him for assignment Friday.