Boston (CNN) Chelsea owner Roman Abramovich flew into Boston Wednesday to watch his team defeat the New England Revolution in a soccer match that raised an estimated $4 million for organizations fighting anti-Semitism and discrimination across the world.

Abramovich joined Revolution owner Robert Kraft to watch the game at the Gillette Stadium in Foxborough, Massachusetts, with both men having donated $1 million towards the charity fund.

Around 25,000 people attended the game, which was organized soon after last October's attack on the Tree of Life Synagogue in Pittsburgh that killed 11 people. The synagogue is one of 15 organizations that will receive money from the game.

Chelsea's Pedro goes close during the victory over New England Revolution.

Speaking to CNN Wednesday, Kraft revealed how the Pittsburgh attack was the catalyst for Wednesday's game with both men deciding action needed to be taken in the fight against anti-Semitism.

"We chatted about mutual interests and using sport to build bridges and what has gone in the area of anti-Semitism has been very disturbing for both of us," Kraft told CNN Wednesday.

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