In sharp contrast to the summer of 2012 when David Rudisha arrived in London unbeaten that year over two laps of the track and promptly blew everybody away with his world record run of 1:40.91, this year has been a bit more erratic.

Vivian Cheruiyot, the IAAF World Championships Beijing 10,000m champion, will chase a long distance double at the Rio 2016 Olympic Games after winning both over 25 laps of the track and then the 5000m at the Kenyan Olympic Trials in Eldoret on Thursday and Friday (30-1).

Last year, Kenya fulfilled its role as favourite and took the victory but they made astonishing hard work of it with an erratic race which showed tactical naivety and inexperience at relay running over this distance, so what lessons will they have learned?

Champions from four continents will grace the men’s two-lap event at the IAAF Diamond League meeting in Eugene on 30 May after the meeting organisers announced their 800m field on Monday (27).

Two-time world 1500m champion Asbel Kiprop will return to Nassau for the IAAF/BTC World Relays, Bahamas 2015 as the Kenyan team looks to replicate – or even better – their tally of three wins from the inaugural 2014 event.

Championship records from US hurdler Kendell Williams and Cuban triple jumper Lazaro Martinez provided the highlights of the final day of the IAAF World Junior Championships, Oregon 2014 on Sunday (27).

World junior 3000m steeplechase champion Daisy Jepkemei will defend her title in the US city of Eugene next month as part of the largest ever Kenyan contingent going to the IAAF World Junior Championships, following the conclusion of the two-day Trials in Nairobi on Wednesday (25).

The gun goes on the 2014 IAAF World Junior Championships at the historic Hayward Field in Eugene, USA, in exactly one month’s time and some of the top teenage athletics talents in the world have already been showing their form this summer.

Mercy Cherono produced an outstanding opening leg that got the ball rolling for a Kenyan quartet to set a women's 4x1500m world record* of 17:05.72 at Kenya’s national trials for the IAAF World Relays at the Nyayo Stadium in Nairobi on Saturday (26).

The action came thick and fast on the penultimate evening session at the 2013 IAAF World Youth Championships, as Lazaro Martinez’s championship record-equalling leap in the Triple Jump was one of several highlights.