WEST PALM BEACH, Fla. — In the fall of 2009, Paul Menhart was a pitching coach in Class A, and Stephen Strasburg was the first overall pick in the previous June's draft. Both worked for the Washington Nationals. They met in Viera, Florida, for the Nationals' instructional league, a place where young players can put in extra work after the minor-league season, and then they headed west to the Arizona Fall League, where the best prospects in the game gather for a brief season.