Alastair Nathan Cook, MBE (born 25 December 1984) is an English international cricket player. He is a left-handed opening batsman who plays county cricket for Essex and International cricket for England, where he is their ODI captain. Cook played for Essex's Academy and made his debut for the first XI in 2003. He has played in a variety of England's youth teams from 2000 until his call up to the Test side in 2006.
While touring in the West Indies with the ECB National Academy, Cook was called up to the England national team in India as a last-minute replacement for Marcus Trescothick and debuted with a century. Debuting at 21 years of age, Cook went on to become the youngest Englishman to reach 1,000, 2,000, 3,000, 4,000 and 5,000 Test runs, making centuries in his first Test matches against India, Pakistan, the West Indies and Bangladesh. He is also the only Englishman to score seven Test centuries before his 23rd birthday.