Dr Micky Collins, executive director at University of Pittsburgh Medical Centre (UPMC): “There is clearly something wrong but we don’t know if concussion is the only variable in some of the scary things we are seeing.”  Photograph: by Piaras Ó Mídheach/Sportsfile

A fundamental disagreement in how brain injuries should be treated exists between leading US experts and what was agreed at last year’s international (...)

 New England Patriots players hold hands and kneel during the national anthem prior to their match against the Houston Texans. Photograph: PA

Throughout these last two weeks of the NFL anthem wars, Donald Trump’s gift for telling people who do not answer to him what to do has been on majesti(...)

The Dallas Cowboys take a knee prior to the US national anthem, ahead of their NFL game against the Arizona Cardinals, in Glendale. Photograph: Matt York/AP Photo

Earlier this week I found myself in the departure lounge of a Philadelphia airport waiting for a connecting flight. It was the time of the evening whe(...)

Dakota Fanning: “If you’re not challenging yourself, that’s no fun.” Photograph:  Axelle/Bauer-Griffin/FilmMagic

For the longest time, Dakota Fanning was framed as an “old soul” by her invariably impressed co-stars. Glenn Close deployed the phrase when, in 2005, (...)

US president Donald Trump: his war with the sporting world has  extended to basketball, after he withdrew a White House invitation to basketball team the Golden State Warriors. Photograph: Brendan Smialowski/AFP/Getty Images

The standoff between US president Donald Trump and the National Football League continued on Monday as Mr Trump defended his outburst against football(...)

President Donald Trump profanely criticised NFL players who protest police brutality by kneeling during the US national anthem. Photograph: Brynn Anderson/AP

US president Donald Trump profanely criticised NFL players who protest police brutality by kneeling during the US national anthem and said they should(...)

Dublin’s Brian Fenton  with the Sam Maguire. Dublin has had a massive population advantage  since the GAA was founded. To use that  to split up Dublin now is disingenuous in the extreme

It’s a startling, shocking idea, but hear me out. I know it’s blowing up the entire system upon which we have organised our intercounty games for 133 (...)

This is the NFL. Pills, thrills and headaches. For the rest of your truncated life.  Photograph:  Zach Bolinger/Icon Sportswire via Getty Images

It was a Monday night game between the San Diego Chargers and the Arizona Cardinals three years back. At the time, the NFL was dealing with the fall-o(...)

Audie Attar stands sentry in the background as Floyd Mayweather jibes Conor McGregor during their final press tour stop in London. Photo: Matthew Lewis/Getty Images

As Floyd Mayweather Jnr and Conor McGregor engaged in the fourth and final leg of their puerile, inter-continental swear-off in London last Friday nig(...)

Goldman Sachs at the New York Stock Exchange: Goldman and BAML were among banks that lent Tottenham Hotspur €455 million in May to help finance a new 61,500-seat stadium in London. Photograph: Reuters

US banks that have carved out a lucrative niche financing the construction and renovation of sports stadiums are making a push into Europe, signing a (...)