The Nationals' annual quest for a veteran power hitter starts anew - NATO chief throws first pitch for the Washington Nationals baseball team - Nationals make history of the worst kind in walk-off loss to the Rockies - Nationals' youth movement powers team to playoff fringes through 71 games - LOVERRO: Orioles, Nationals rivalry more about billionaires, bottom lines than ballparks, players - Nationals, Orioles have had a pretty friendly rivalry -- at least on the field - LOVERRO: The Nationals' future is inside the spring training clubhouse in the lockers on the right - LOVERRO: How the Padres, 50 years ago, almost became Washington's baseball team