Since his return to the Australian side for the 2013-14 Ashes series, which Australia won 5-0 on the back of Johnson's hostile heroics, Johnson has been a fearsome proposition for any opposition. In the thirteen Tests he has played in that period, he has taken 78 wickets at a sub-20 average with five five-wicket hauls, including two in one game against South Africa in the first Test at Centurion. However, since that game he has been somewhat diminished: although still effective, he has not demolished teams in the same fashion. Close on his tail is a quartet of world-class seam bowlers that comprises Ryan Harris, Tim Southee, Dale Steyn and Trent Boult. It therefore remains to be seen how long Johnson will be able to hold onto his top spot for.
Other big movers include Mushfiqur Rahim, who has been catapulted into the world's top eleven one-day international batsmen on the back of a terrific three-match series against Pakistan in which he scored 106, 65 and 49 not out, all at a strike rate of 116. He, like everyone else, still has some way to go before he catches up to AB de Villiers' mind-boggling 735-point rating.
The culling of April 2013's matches from the rankings have led to Collins Obuya dropping off the Twenty20 table. Kusal Janith Perera creeps into the top 20 in his absence. Otherwise, there are no major changes to the rankings in that format.