Chad Pennington has decided to try another comeback. Pennington, 34, lasted only two plays this season with the Dolphins, then underwent surgery on his throwing shoulder for the fourth time. "This will be a daily and weekly process," he said Tuesday. "At any given time my body can say, 'That's enough.' It will be an interesting time. It's a step of faith to see how far I can take this." Pennington has twice been chosen the NFL comeback player of the year, each time after returning from shoulder surgery. "I feel if I don't test it and see what's out there, I'll always have questions in the back of mind," Pennington said. "I still have the desire and passion to play the game. Until that fire burns out, I need to go after that."