The Phillies announced that they have designated catcher Sebastian Valle for assignment in order to clear a 40-man roster spot for Roberto Hernandez, whose one-year contract with the team is now official.

The 23-year-old Valle ranked among the Phillies' top 10 prospects heading into each of the 2010-12 seasons, per Baseball America, but his performance has slipped in recent seasons. Valle followed up a lackluster .253/.271/.428 performance in 2012 with a .203/.245/.359 performance in 379 Double-A plate appearances last season. Following that 2012 campaign, BA said that he should end up as at least an average defender behind the plate, praising his lateral movement, receiving skills and strong arm.