Giolito suffered a sprained the ulnar collateral ligament in his right elbow in March and missed the rest of his final high school season, but he said his rehab has been going well. He said he has not thrown off the mound yet, but he hopes to start bullpen sessions soon. "The elbow feels really strong, and my arm feels really strong," Giolito said. "I feel really good about pitching really soon, and we will see how it goes." General manager Mike Rizzo said Giolito will leave for the Nationals' training facility in Florida tomorrow to begin his professional career, and it will give the club a chance to see where the young star is health-wise. "We will assess him on the mound, and he will have a throwing progression with (pitching coordinator) Spin Williams and (rehab coordinator) Steve Gober," Rizzo said. "We will create a new pitching plan for him. We will see (to his) progression from flat ground and long toss to getting on the mound and hopefully see some competition, if not in the regular season, then in the instructional league." Rizzo said the franchise is not worried about the possibility of Tommy John surgery to repair the elbow. They believe they can rehabilitate Giolito's throwing elbow through a progressive strengthening program. "We are going to take rehabilitation rout to it," Rizzo said. "We expect him to climb on the mound and pitch some type of competitive baseball sometime this year. We are going to take it cautiously because he is an extremely talented young pitcher. We have dealt with these situations before, and we will handle this the right way and do the right thing by him."