Chase Utley has been sent to a knee specialist because he's hit a "plateau" in his rehab. At least, that's the way the Phillies described the situation Monday morning in a statement to reporters. Utley has experienced complications with his chronic right knee condition since the start of spring training and has yet to make an appearance in a Grapefruit League game. It's safe to say he's now questionable (or even doubtful) for Opening Day.