James Wood has officially arrived. If every superstar needs a moment in which they state their case as one of the best players in baseball, the Washington Nationals’ second-year slugger now has his. On Thursday afternoon, with two outs and a runner on base in the bottom of the 11th, with the Nationals facing the prospect of extending their losing streak to 12 games, Wood seized the stage. The 6-foot-7 masher unloaded on the second pitch he saw, clobbering it beyond the centerfield fence for his first career walk-off home run.