Complex sentence: Michael John Clarke (born 2 April 1981) is a Australian test cricketer and the captain of the Australian cricket team for Test matches, and previously also ODI cricket until his retirement from ODI cricket after the 2015 World Cup.
Split into simpler sentences: Michael John Clarke (born 2 April 1981) is a Australian Test cricketer and current Australian cricket team Test captain. He was also the AustralianODI cricket captain until his retirement from ODI cricket after the 2015 World Cup.