BRADENTON, Fla. — The first team in the National Football League to play in a privately financed stadium now wants as much as $225 million of public funds to bring its 24-year-old facility up to “world-class” ­standards.

The Miami Dolphins say their stadium needs upgrades that include a “modern canopy-style roof like that which sheltered World Cup fans from the sun, wind, and rain in South Africa,” in addition to new high-definition video screens and extended seating closer to the field. But the Dolphins’ plans are not sitting well with the Broward County Commission and a professional hockey-team owner there.

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