Villarreal update: With right-hander Scott Mathieson in optional waiver limbo following an inauspicious debut, the Phillies are short in the bullpen. Once they sort out the present situation with Rollins, Ruiz and the active roster, one solution could be to promote 28-year-old reliever Oscar Villarreal, who underwent Tommy John surgery in 2009 and is back healthy and pitching well for Triple-A Lehigh Valley. The right-hander has appeared in 22 games with an ERA of 3.45 and a 24/8 K/BB ration over 28 2-3 innings. According to IronPigs beat writer Jeff Schuler, he's been strong lately, allowing just six hits and three earned runs over his last 14 1-3 innings. He's someone to watch as the season progresses. The Phils would need to make room on the 40-man roster to accommodate him.