The 2012–13 Welsh League Cup was the 21st season of the Welsh League Cup, which was established in 1992.
 A new format was introduced with eight feeder league clubs involved for the first time.
 The winners progressed into the second round, alongside the twelve Welsh Premier League clubs.
West Ham United Football Club is a professional football club based in Stratford, East London, England.
 They compete in the Premier League, the top tier of English football.
 The club re-located to the London Stadium in 2016.
The Premier Academy League (sometimes abbreviated as FAPAL) was the top level of youth football in England before it was to be replaced by a new league proposed by the Elite Player Performance Plan in 2012, which was accepted by the 72 member clubs of The Football League on 20 October 2011.
 This newly formed league was established in the 2015-2016 season and given the renamed title of the Professional Development League It was contested between the Academy sides of the Premier League and some Football League clubs.
 It sat above the second tier of youth football, The Football League Youth Alliance, which is for the remaining Football League clubs and some Football Conference clubs with a "Centre of Excellence".
 The most successful team is Arsenal, having won 5 titles.
London Stadium (originally known as the Olympic Stadium) is a stadium in Stratford, London, England, at Marshgate Lane in the Lower Lea Valley.
 It was constructed to serve as the home stadium for the 2012 Summer Olympics and Paralympics, hosting the track and field events and opening and closing ceremonies.
 It was subsequently renovated as a multi-purpose stadium, with its primary tenants being West Ham United Football Club and British Athletics.
 The stadium is 6+1/2 mi from Central London.
GOALTV was a football network offering Asia audiences coverage of European football.
 This included live games from three major European leagues as well as behind-the-scenes access to three Premier League clubs in England, Manchester City, Chelsea and Liverpool, in addition to FC Barcelona & Real Madrid FC of Spain.
"Game 39" or the international round was a proposed extra round of matches in the Premier League to be played at neutral venues outside England.
 The top football league in England, the Premier League is currently played on a double round robin basis, where each team play the other 19 home and away, giving a total of 38 games.
 The international round was proposed at a meeting of the 20 Premier League clubs on 7 February 2008, with a view to being introduced for the 2010–11 season, when a new television broadcasting rights contract would be in place.
 The proposed start date was later put back to 2013–14.
 The proposal was reportedly endorsed by the chairmen of a number of Premier League clubs.
Premier League All Stars was a televised charity football tournament, which was broadcast live on Sky1 on consecutive nights between 23 September and 30 September 2007.
 The innovative format features football teams representing all 20 Premier League clubs, each playing to win a share of the £300,000 prize money for distribution among their chosen charities.
 All matches were played in front of a live audience at Premier League All Star Arena which was built inside the David Beckham Academy in Greenwich, London.
The Lancashire County Football Association Cup (commonly known as the Lancashire Senior Cup), is a football knockout tournament involving teams from Lancashire, England.
 It is a County Cup competition of the Lancashire County Football Association and involves Premier League clubs and Football League clubs.
 However these days the big clubs generally field their reserve teams.
South London derby is the name given to a football derby contested by any two of Charlton Athletic, Crystal Palace, Millwall and AFC Wimbledon, the four Football League clubs based in South London, England.
 It is sometimes more specifically called the South East London derby when played between Charlton and Millwall.
 The close geographical proximity of the teams contributes significantly to the rivalry.
 Charlton Athletic and Millwall are located in South East London, with Millwall's The Den and Charlton's The Valley being less than four miles apart.
 Crystal Palace are based further south in the suburb of South Norwood, their stadium Selhurst Park still being only six miles from The Den and eight from The Valley.
 AFC Wimbledon play at Kingsmeadow, which is eight miles west of Selhurst Park, 11 from The Den and 15 from The Valley.
The 2003 FA Premier League Asia Cup was the first edition of the Premier League Asia Trophy, a four-team pre-season football tournament held every two years.
 Participants in the inaugural edition included hosts Malaysia and three Premier League teams: Chelsea, Newcastle United and Birmingham City.
 All games were held at the Bukit Jalil National Stadium in Kuala Lumpur.

Question: Which athletics arena was coveted by three Premier League clubs before one from East London was selected to become its new tenant?
Answer: Olympic Stadium