After allowing Ross Ohlendorf to face the minimum through his first five innings Wednesday, the Braves saw Alex Wood unleash his venom on home-plate umpire CB Bucknor during a heated exchange after the Nats tallied the game’s first two runs. Wood’s fiery exchange seemed to spark a slumbering offense. Dan Uggla and Justin Upton homered during a three-run sixth inning that propelled the Braves to a much-needed 5-2 win over the Nationals.