Thomas Jakelich, a 16-year-old sophomore at an Upper East Side private school died after an on-field collision during a soccer game on Monday.

Jakelich was playing for Loyola High School against the United Nations International School at Randalls Island that afternoon when he ran crashed into a player on the rival team. He had to be carried off the field, but was conscious during an ambulance ride to Harlem Hospital Center, the New York Post wrote.

Doctors operated on Jakelich several times before he was pronounced dead at around 11 p.m., according to a Daily News report. Jakelich's physicians believe he was bleeding internally in the hours leading up to his death.

Jakelich's stepfather told the tabloid he loved the sport.

"He was a soccer fanatic, and he was darn good," Rick Newman said. "The last great moment he had was out there on that field."

Loyola president Tony Oroszlany marked Jakelich's death in a statement.

"As a school community, we mourn the tragic loss of Thomas Jakelich and offer our prayers and deepest condolences to his family," he said.

Jakelich started at Loyola a few months ago, having transferred from a school in Bronxville. Tuition at the Jesuit school runs $34,000 a year. Loyola administrators organized a mass in Jakelich's honor on Wednesday, and the family will likely organize a funeral nearby so his friends can attend, according to the Post.

Jakelich's Facebook pages shows his love of soccer, sneakers, and hanging out with friends.

Newman told the News his stepson had a big heart.

"He was empathetic in a way that can't be taught," he said.