SATO, Seidai (JPN) 1994

Osaka Grand Slam 2018 (JPN) (-81 kg Senior) IJF

WON Round 1 07:57	SATO, Seidai (JPN) 1994	`1--/2`
	DJALO, Alpha Oumar (FRA) 1996	`---/2`

WON Round 2 04:11	SATO, Seidai (JPN) 1994	`-1-/2`
	NTANATSIDIS, Alexios (GRE) 1993	`---/2`

LOST Round 3 07:54	ALBAYRAK, Vedat (TUR) 1993	`1--/2`
	SATO, Seidai (JPN) 1994	`---/3`

Hohhot Grand Prix 2017 (CHN) (-81 kg Senior) IJF

LOST Round 1 04:00	ESPOSITO, Antonio (ITA) 1994	`-1-/2`
	SATO, Seidai (JPN) 1994	`---/0`

Dusseldorf Grand Prix 2017 (GER) (-81 kg Senior) IJF

WON Round 1 04:00	SATO, Seidai (JPN) 1994	`-1-/0`
	PANINI, Vinicius (BRA) 1990	`---/1`

LOST Round 2 06:16	IVANOV, Ivaylo (BUL) 1994	`1--/2`
	SATO, Seidai (JPN) 1994	`---/3`

Grand Slam Tokyo 2016 (JPN) (-81 kg Senior) IJF

LOST Round 2 05:00	SATO, Seidai (JPN) 1994	`---/0`
	SZWARNOWIECKI, Damian (POL) 1993	`--1/1`

Grand Slam Tyumen 2016 (RUS) (-81 kg Senior) IJF Silver

WON Round 1 02:36	SATO, Seidai (JPN) 1994	`1-1/0`
	MIKUCKIS, Filips (LAT) 1994	`---/1`

WON Quarter-Final 05:00	PACEK, Robin (SWE) 1991	`---/2`
	SATO, Seidai (JPN) 1994	`---/1`

WON Semi-Final 05:00	VOROBEV, Ivan (RUS) 1988	`---/2`
	SATO, Seidai (JPN) 1994	`---/1`

LOST Final 05:00	LAPPINAGOV, Aslan (RUS) 1993	`--1/1`
	SATO, Seidai (JPN) 1994	`---/1`

Grand Prix Jeju 2015 (KOR) (-81 kg Senior) IJF Gold

WON Round 1 05:00	RAHIMLI, Huseyn (AZE) 1995	`---/3`
	SATO, Seidai (JPN) 1994	`---/2`

WON Round 2 05:00	SATO, Seidai (JPN) 1994	`---/0`
	UNGVARI, Attila (HUN) 1988	`---/1`

WON Round 3 07:36	WANG, Ki-chun (KOR) 1988	`---/2`
	SATO, Seidai (JPN) 1994	`---/1`

WON Quarter-Final 05:00	BOTTIEAU, Joachim (BEL) 1989	`---/2`
	SATO, Seidai (JPN) 1994	`---/1`

WON Semi-Final 03:29	LEE, Sungho (KOR) 1992	`--1/0`
	SATO, Seidai (JPN) 1994	`1-1/0`

WON Final 03:17	KHALMURZAEV, Khasan (RUS) 1993	`---/2`
	SATO, Seidai (JPN) 1994	`1-2/0`

World Championships Juniors 2014 (USA) (-81 kg Junior) IJF

WON Round 1 01:46	ZHURKABAYEV, Salamat (KAZ) 1995	`---/0`
	SATO, Seidai (JPN) 1994	`1--/0`

WON Round 2 05:00	SATO, Seidai (JPN) 1994	`---/1`
	SILVA MORALES, Ivan Felipe (CUB) 1996	`---/3`

LOST Round 3 01:19	HARDER, Rico (NED) 1994	`1--/0`
	SATO, Seidai (JPN) 1994	`---/1`