Paul Risso's lonely line in the database notes that he was drafted by the Pittsburgh Pirates in the sixth round of the 1973 Major League Baseball draft out of San Mateo (Calif.) College. The right-handed pitcher merely wants to pick up where he left off four decades ago when a shoulder injury wrecked his teenage dream, hoping the St. Paul Saints provide a 60-year-old engineering manager from Albuquerque, N.M., a second chance at a baseball career. Risso is among the 50 to 75 hopefuls expected to try out Friday, May 3, for the independent minor-league team. The sexagenarian with the 84-mph fastball is attempting to bypass competitors less than half his age and impress the Saints' brass enough to be invited back next week for training camp. "This is unfinished business," Risso said last week in a telephone interview. "When I got back into baseball I made it my goal to reach the highest level I could. I have to take every opportunity I can."