Competing under a six-round format, the 24-year-old landed at 8.36m in round two, which is the world leading mark of the year. Huang Changzhou ranked second with a personal best of 8.33m in his first attempt.
"Hopefully we will renew our cooperation someday in the future. We are family as always," the club added.
In other fixtures on Saturday, Bragantino beat Ceara 4-2 and Fortaleza overcame Internacional 1-0. Enditem
"It was important for Pierre-Emerick to stay with us. He's a superb player with an incredible mentality. Being the player to have taken the least amount of time to reach 50 goals with this club tells you everything you need to know about him and his way of working."
Reguilon broke into the Real Madrid first team in the 2018-19 season, making 22 appearances and moving ahead of the Brazilian left back Marcelo in the pecking order.
KPL's case was further compromised by the fact that not all 18-KPL clubs had appended their names to the petition.
Thiago also thanked his former club, with which he had spent the previous seven years.
The squad also includes Real Madrid midfielder Federico Valverde, Juventus midfielder Rodrigo Bentancur and Inter Milan defender Diego Godin.
KPMG recently rated Schalke among the 15 most valuable clubs (814 million euros) worldwide.
The visitors doubled their lead shortly after the start of the second half, when the impressive Gabriel rose highest to head home Willian's corner.
The 31-year-old recently commented that he would like to return to the Premier League and said Madrid had blocked previous attempts to leave.