KINGSTON, Jamaica -- Usain Bolt is revving up for the world championships in August, but he says he has a lot or work on before the Moscow meet. The worlds fastest man clocked a 9.94 seconds in the 100 metres to win the finals of the Jamaica national championships on Friday night. But he sounded less than thrilled with his performance. "Its all about getting through and getting it done and thats what I did," Bolt told reporters after the race in the islands national stadium, which was half empty on a calm Friday night in Kingston. He said his start and his "execution wasnt the best" but he was "feeling all right, not too tired." He said he was fairly pleased with his acceleration - or his "turbo," as he calls it - but its not yet where he wants it to be. "Ive got a lot more work to do," the 100 and 200 world record-holder said after the race, adding, "As long as the coach is not worried, Im not worried." Behind Bolt was Kemar Bailey-Cole at 9.98 and Nickel Ashmeade at 9.99. Former world record holder Asafa Powell did not finish in the top three to qualify for the worlds, shocking some of the decorated sprint stars many fans in Jamaica. At Fridays 100 metre finals, Bolts night was certainly made easier by the absence of teammate Yohan Blake. The Olympic silver medallist withdrew from the meet because of a hamstring injury that his agent says hasnt completely healed. But since Blake won the 100 metres at the 2011 worlds he has automatic qualification for the race at the August competition in Moscow. Bolt has dominated global sprinting for years. The powerful Jamaican has set world records (his mark stands at 9.58) and captured two straight Olympic 100-meter finals. But earlier this month at the Golden Gala meet in Rome, Bolt lost by a hundredth of a second to American Justin Gatlin in the 100. It was Bolts first significant loss since his false-start disqualification at the 2011 world championships in South Korean. At the U.S. championships in Iowa on Friday night, American sprinter Tyson Gay overcame a slow start to win the 100 metres, surging past Gatlin halfway through the race. Gay finished in a time of 9.75 seconds, the fastest in the world this season. At Jamaicas meet on Friday, Kerron Stewart won the womens 100 metres. She ran 10.94 seconds, beating Sherone Simpson and Schillonie Calvert. Two-time Olympic champion Shelley-Anne Fraser-Pryce qualified for the worlds after dominating the Diamond League. Decorated female sprinter Veronica Campbell-Brown is also missing Jamaicas national championships due to a positive drug test being investigated by an island anti-doping panel. Three-time Olympic gold medallist Campbell-Brown, or "VCB," as she known in sprinting circles, tested positive for a banned substance at a meet in May and will serve a suspension while anti-doping officials rules on the positive drug test. Earlier this week, Campbell-Browns manager, Claude Bryan, said the accusation came as a "shock to her" and the reigning 200-meter world champ is determined to clear her name. Just before Fridays meet got under way, Warren Blake, president of the Jamaica Athletics Administrative Association, urged people not to rush to judgment, saying everyone should wait for the official ruling from the disciplinary panel. A day after Jamaican officials announced Campbell-Browns provisional suspension, a spokesman for the International Association of Athletics Federations told AP that "all evidence seems to point to this offence being a lesser one." Cheap Jerseys . Vaives lawyer Trevor Whiffen claims the former 50-goal man wasnt provided with a copy of the claim beforehand and that he would not have agreed to the allegations made against the NHL had he been asked to review its contents. 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Glamorgan 481 for 8 (Donald 234, Bragg 60, Selman 57, Meschede 54*, Davis 5-123) v Derbyshire ScorecardNineteen-year-old Aneurin Donald made an astonishing 234 off 136 balls, equalling the fastest double century in first-class cricket in his maiden Championship hundred, as Glamorgan piled up 481 for 8 on the first day at a sun-kissed Colwyn Bay.Although he was dropped twice early in his innings, Donald went on to devour the Derbyshire attack in an innings that include 15 sixes and 26 fours. He reached his 100, 150 and finally 200 with sixes - two over midwicket at a top edge to third man for the double - the 123 balls needed for the double putting him level with Ravi Shastris innings from 1985 having required just 43 deliveries for his second hundred.I was pleased because it has put the team in a strong position, and after a lean patch recently, delighted to get a big one, Donald said. I had no idea of the records that went, but it was especially pleasing to equal Ravi Shastris previous record, as he is a former Glamorgan player.Asked about reaching three landmarks with sixes, he admitted, yes, it was in the mindAfter electing to bat first on a pitch that encouraged the seamers early on - Derbyshire didnt help themselves by droppiing five catches - Glamorgan lost Mark Wallace in Tony Palladinos first over before Nick Selman and Will Bragg put on 88 for the second wicket only for Selman and Jacques Rudolph to depart in quick succession.ddddddddddddonald did not appear until 2.10pm but was soon into his stride and was particularly severe on the young legspinner Matt Critchley who was struck for 24 in one over. He added 115 with Bragg and later 130 in 15 overs with Craig Meschede.By the time Donald had struck his 15th and final six, a passing car had been dented on the road outside the ground as had five others in the members enclosure. He was finally dismissed, caught at long-off, after Derbyshire had posted nine fielders on the boundary after two overs of the second new ball had been taken.To their credit, every Derbyshire player rushed to congratulate Donald as he left the field. He became the youngest double centurion in the clubs history - five years younger than the previous incumbent John Hopkins.Will Davis, the young Derbyshire seamer took his first five wicket haul, but the day belonged to Donald on the North Wales coast. ' ' '