maiden tour Trescothick participated in two England A tours during the winter of 1999, but his full One Day International debut came against Zimbabwe at The Oval on 9 July 2000, when he scored 79. He continued his good form in the tournament with a Man of the Match-winning 87 not out against the West Indies at Chester-le-street, amassing 288 runs at an average of 48.00 and taking two wickets against Zimbabwe at Old Trafford. As a result of his good form in the NatWest series, Trescothick was given his Test match debut later that summer in the third Test against the West Indies at Old Trafford. He displayed a calm temperament when England lost early wickets, scoring 66 and forming a partnership of 179 with Alec Stewart. Journalist Thrasy Petropoulos observed that there was "poise and durability...just as there had been enterprise and verve to his impressive start in the one-day arena." He ended the Test series with an average of 47.50. England began the 2000–2001 winter tour with the 2000 ICC KnockOut Trophy at Nairobi Gymkhana Club. Trescothick did not score highly in the tournament, and England were knocked out at the quarter-final stage against South Africa. Trescothick was named the Professional Cricketers' Association Player of the Year for his performances for Somerset throughout 2000. Trescothick's maiden international century came against the Sindh Governor's XI in October 2000, during the first warm-up match to the Pakistan series. Trescothick reached his highest score (71) of the three Test matches in the opening innings of the first Test. He took his sole Test wicket in the third Test, when Ashley Giles caught the Pakistan opener Imran Nazir. Trescothick started the Sri Lanka tour with a century against a Sri Lanka 'Colts XI'. He was the top scorer in both innings of the first Test with 122 and 57, although this was overshadowed by Marvan Atapattu's 201 not out in Sri Lanka's innings. Trescothick averaged 41.33 in the Test series, but only 16.00 in the three subsequent ODIs. England played two Test matches against Pakistan in June 2001. Although Trescothick scored 117 in the second Test, it was not enough for England to win the match. His ODI form improved at the start of the 2001 NatWest Series against Australia and Pakistan, with scores of 69 and 137 respectively. However, his series ended with two consecutive ducks, and England lost all