Dubliner Conor McGregor (left) has entralled the Irish public when he beat Diego Brandao of Brazil at the O2 Arena, Dublin, in a UFC fight in July. Photograph: Inpho.

Despite celebrating 21 years, the mixed martial arts sport’s maturity is in real doubt

Ryder Cup captains Paul McGinley (right) and Tom Watson.

Over there in Europe the competition seems to really matter. Over here, it doesn’t.

Shantel Jackson: ex-fiancee of Floyd Mayweather jnr looks on as her attorney Gloria Allred holds up a photograph of the couple after announcing a lawsuit against the boxer for battery, assault, invasion of privacy, defamation and false imprisonment. Photograph: Kevork Djansezian/Getty Images

Jackson claims she wasn’t allowed leave his house unless escorted by a TMT employee

Michael Sam during pre-game workouts for the St Louis Rams in Miami. Photograph: Marc Serota/Getty Images

First openly gay NFL player joins practice squad of self-styled “America’s Team”

Before the fall: Joe Paterno   watches as his Penn State Nittany Lions team play Northwestern Wildcats at Ryan Field in Evanston, Illinois in 2009, three years before his  sacking over allegations he helped cover up child sexual abuse allegations against his assistant coach.  Photograph:  Jonathan Daniel/Getty Images)

Sacking of Joe Paterno, the 'winningest' coach in US college history continues to generate controversy

John Isner returns a serve against Andy Murray, from Great Britain, during a match at the Western & Southern Open tennis tournament, in Mason, Ohio. Photograph: Al Behrman/AP

There was a time when 10 of the top 17 male players were American, but times change

Original fight club that produced Joe Louis and Sugar Ray Robinson will be lost to Detroit and the world

Donald Trump: some NFL owners have previous with the business man that may not bode well for his chances. Photograph: Shawn Thew/EPA

The attention-grabbing billonaire is trying to push his way into the NFL

Running back Ray Rice of the Baltimore Ravens addresses a news conference with his wife Janay at the Ravens training centre in Owings Mills, Maryland. Rice was involved in an incident with Janay at an Atlantic City casino. Photograph:  Rob Carr/Getty Images

Ray Rice is the latest in a sorry line of players unable to control a runaway temper

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