WASHINGTON (AP) -- - Sometimes there's really no explaining why a pitcher not known for strikeouts suddenly turns into a strikeout artist. The Washington Nationals had no shortage of theories, however, after Tanner Roark fanned a career-high 15 and allowed only two hits over seven innings Saturday in a 2-0 victory over the Minnesota Twins. Roark (2-2) twice struck out the side and fanned at least two strikeouts in four other innings. More...