Kyogo Furuhashi and Reo Hatate both scored two goals as leader Celtic eased past St. Johnstone 4-1 at home in the Scottish Premiership on Saturday.
The goals from the two Japanese players, who were not picked for the recent World Cup in Qatar, helped Celtic maintain its nine-point lead at the top of the table over second-placed rival Rangers.
Hatate, starting as a makeshift right back, blasted home the opener from just inside the box in the 14th minute before Furuhashi doubled the lead three minutes later with a clever flick with his left foot off a low left-wing cross.
Furuhashi tapped in his second in the 40th minute as he peeled away from his marker to meet a low cross from the right. Hatate scored his second in the 52nd minute, wrapping up a fine passing move by squeezing his effort through the legs of the goalkeeper from a tight angle.
Drey Wright scored a 67th-minute consolation for the visitors, while Celtic ended the match with 10 men after David Turnbull was sent off in stoppage time.
"Everyone ran a lot and although we conceded a goal we managed to do what we had to at home," said Hatate, who was denied a hat trick by the post in the 72nd minute as he played the entire match.
"I keep the team tactics in my head and was intent on doing what I had to, even if my position changed. I got these goals thanks to my teammates."
Daizen Maeda, who scored for Japan at the World Cup, came off in the 63rd minute. Furuhashi, who had a header cleared off the line in the opening minutes, also came off after the visitors' goal.