From the NFL to rec leagues, football is facing a stark, new threat: an evaporating insurance market that is fundamentally altering the economics of the sport, squeezing and even killing off programs faced with higher costs and a scarcity of available coverage, an Outside the Lines investigation has found.

The NFL no longer has general liability insurance covering head trauma, according to multiple sources; just one carrier is willing to provide workers’ compensation coverage for NFL teams. Before concussion litigation roiled the NFL beginning in 2011, at least a dozen carriers occupied the insurance market for pro football, according to industry experts.

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