Shosei Togo and three relievers combined on a seven-hit shutout as the Central League-leading Yomiuri Giants beat the Hiroshima Carp 5-0 to complete a three-game sweep on Thursday. Togo (11-7) allowed five hits and three walks while striking out six over six innings at Mazda Stadium, where the Giants managed three runs in the third against lefty Hiroki Tokoda (11-6). Shogo Asano’s leadoff double and an infield single triggered the outburst. A throwing error by Tokoda let in the first run, with two more scoring on a pair of scratch singles. “The early run support gave me the leeway I needed to …