Born in Oxford, he came through the Oxford United youth system and was then signed by Southampton, who had to pay United compensation of £275,000 as a result. Due to an injury crisis he was brought into the Southampton first team, where he scored a hat-trick against Colchester United in the Carling Cup in 2004. He then scored in the local derby against Portsmouth in Southampton's 2-1 win, thus establishing himself in the squad.
He was sent out on loan twice; to Plymouth Argyle in February 2005 for twelve weeks, scoring 4 goals in 14 appearances, and to Derby County in October 2005, scoring 3 goals in 9 appearances. He was recalled from Derby on 22 December 2005 after the appointment of George Burley as Southampton manager.
Although Blackstock had featured regularly under Burley, Southampton's purchase of Bradley Wright-Phillips meant that Blackstock had more competition for a role in Southampton's first team. As a result, Blackstock moved to Queens Park Rangers on August 10, 2006 for a fee believed to be around £500,000.
Given the number 32 shirt for the 2006-07 season, Blackstock was first choice striker throughout the season and played with a number of different partners, including Kevin Gallen, Paul Furlong and Marc Nygaard. Somewhat surprisingly however, the teenager Ray Jones was Blackstock’s most regular partner as they struck up a good understanding with a combination of pace and power.
As the season progressed so did Blackstock, and it was in the final stages of the season that his performances started to blossom.
Blackstock ended the campaign as club top scorer on 14 goals, one short of his personal target of 15. He came second in the player of the season awards, and his goal against Preston won goal of the season.
For the 2007-08 season, Blackstock has been given the number 9 shirt.
On 16 August 2007, Blackstock was called up to Stuart Pearce's first England under-21 squad as full time manager. In the match against Montenegro on 7 September, he came on as a substitute on 90 minutes and headed the ball down for Andrew Surman to score the final goal in a 3-0 victory.
Full Name DEXTER ANTHONY TITUS BLACKSTOCK
Date Of Birth 20/05/86
Place Of Birth OXFORD, ENGLAND
Height 6'1
Playing Position STRIKER
Current Club QUEENS PARK RANGERS
Number 9