Dontrelle Willis (arm fatigue) is aiming to return to Grapefruit League games this week. "I feel great," Willis said Monday. "They have me doing some things to keep me strong. It's actually a blessing in disguise. That's the one thing about your body: Something could be fatigued and it can cause problems. It's been feeling great." He's trying to earn a spot on the Phillies' Opening Day roster as a lefty specialist.