Seven Nationals minor leaguers have been selected to play in the Arizona Fall League, which often features some of the best prospects in the sport. The Nationals representatives will play for the Mesa Solar Sox, which will also field minor leaguers from the Angels, Athletics, Blue Jays and Cubs. Right-handed pitchers Neil Holland and Derek Self, left-handed pitchers Felipe Rivero and Matt Grace, catchers Spencer Kieboom and Pedro Severino and infielder Tony Renda form the Nationals’ contingent.