By now, the profile is familiar: A slender build. The ability to hit to all fields. An unheralded yet steady ascent through the Minor Leagues. A demeanor that's calm and apparently impervious to anxiety. That's Matt Duffy, the Giants' National League Rookie of the Year candidate. But after San Francisco's 6-1 triumph Wednesday over the Atlanta Braves, the description also fit Kelby Tomlinson, who excelled in his first Major League start.