By Mike Rowbottom

Luzhniki Stadium MoscowDecember 13 - The 2013 International Association of Athletics Federations (IAAF) World Championships in Moscow will now be shown by the BBC after Channel 4 agreed to transfer its rights to the broadcaster.

The Championships will be the first of three on the BBC with deals in place for Beijing 2015 and London 2017.

Channel 4's coverage of the 2011 IAAF World Championships in Daegu got off to a rocky start when lead presenter Ortis Deley's lack of experience caused widespread criticism and numerous embarrassing YouTube items.

However, the overall standard of commentary and analysis was excellent.

Channel 4 made a deal in March to be the sole terrestrial broadcaster of United Kingdom horseracing between 2013 and 2016.

They are also favourites to retain the Paralympics rights for Rio 2016 after their well-received broadcasting of London 2012.

Channel 4 also intends to cover the International Paralympic Committee's (IPC) World Athletics Championships in Lyon next year.

Channel 4's Martin Baker said the move "reflects the changing nature of both broadcasters' sports portfolios".

"Since the deal for the 2011 and 2013 World Athletics Championships was agreed in 2010, Channel 4 has acquired the rights to the major events of UK horseracing and the BBC has announced that it will broadcast the 2015 and 2017 World Athletics Championships," the Channel's director of commercial affairs explained.

Ortis Daley Daegu 2011Channel 4 were forced to replace the main host Ortis Daley after a disastrous start to their coverage of the 2011 World Championships in Daegu

London saw off competition from Doha to stage the 2017 event, after pulling out of the race for 2015 because of uncertainty over how the Olympic Stadium would be used in the wake of the London 2012 Games.

Director of BBC Sport Barbara Slater said the agreement demonstrated the corporation's commitment to athletics, guaranteeing a major championship every year until 2017.

"Added to the Commonwealth Games in Glasgow in 2014 and the Rio Olympics in 2016, it will take the BBC audience on an athletics journey from London 2012 to London 2017."

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