After nearly two months, Fernando Tatis Jr. is finally on the board with his first home run of the season. In the fifth inning of the Padres’ 9-4 loss to the Nationals, Tatis blasted a towering 451-foot solo homer to left field at Nationals Park to break his harrowing streak without a home run that dated back to last season. Before Saturday’s game, the Padres outfielder had not gone deep in 240 plate appearances, which was the longest home run drought in the MLB. “I just knew right away,” Tatis