Proctor underwent surgery in October for repair of a partially torn flexor tendon, and his return his repeatedly been delayed when he felt pain throwing. The latest setback came Monday, when Proctor was shut down after throwing only about a dozen pitches in a bullpen session.
"It's worse than before," Proctor said Wednesday. "It just gets more and more frustrating. The most frustrating thing is the rest of my body feels great. I feel like a car with three tires."
Proctor said the possibility he may need reconstructive surgery has crossed his mind. He was acquired in the offseason to bolster the Marlins' shaky bullpen after going 2-0 with a 6.05 ERA in 41 games for the Los Angeles Dodgers in 2008.
Proctor is set to fly Monday to Birmingham, Ala., to see Andrews.