Twins closer Joe Nathan will test his injured elbow on Saturday. The Star Tribune reported that Nathan, who is facing season-ending surgery, will play catch to test the torn ligament in his right elbow. "When I feel loose -- if I do get loose -- I definitely want to test this thing as much as I can for Day 1 and see how it feels," Nathan said Monday. "This is going to be something where there shouldn't be a gray area. It's going to be ' I feel great, or this just isn't me, this doesn't feel right.' "