The Saints ace is currently away from St Mary's on international duty with the Samurai Blue.
The Saints ace, who is closing in on a century of caps for his nation, was one of six different scorers for the Samurai Blue as they romped to victory before a crowd of 43,122, as reported by the Japan Times.
Japan were dominant from the off as they laid siege to their opponents before finding the breakthrough on 22 minutes through Takumi Minamino's header, the Red Bull Salzburg midfielder scoring for his third straight match.
Yoshida then made it two just before the half-hour mark with his own header off a rebound, before his defensive teammate Yuto Nagatomo added a third and Kensuke Nagai made it four by half time.
The Saints man played the full 90 minutes as Wataru Endo and substitute Daichi Kamata notched up their own contributions for an emphatic victory which put Japan - who had previously beaten Myanmar 2-0 top of Group F (AFC) ahead of their trip to Tajikistan on Tuesday.
Following the conclusion of the international break, the £6.3million-rated ace (Transfermarkt) will be in club action as Ralph Hasenhuttl and co travel to Wolves on Saturday 19 October.
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