Baseball great Willie Mays has made a pilgrimage back to the Maryland town where he began his career and says all's forgiven. It was in 1950 that a young Mays played his first pro game at Municipal Stadium in Hagerstown, Maryland, north of Washington. He was a minor-leaguer in the Giants organization. His debut was marred by fans yelling racial slurs at him. And, he was forced to stay in a blacks-only hotel. Yesterday, Mays returned to the stadium for a tribute. Fans gave him a standing ovation. And Hagerstown renamed part of a road past the ballpark in his honor.