Ex-Pakistan cricket captain Salman Butt and bowler Mohammad Amir have lost their appeals against their sentences for a spot-fixing scam.The pair were not present at the Court of Appeal in London for the proceedings before the Lord Chief Justice and two other judges. Butt, 27, was jailed for 30 months and Amir, 19, received a six-month term.They were sentenced over a plot to bowl deliberate no-balls in a Test match against England .Bowler Mohammad Asif, 28, and cricket agent Mazhar Majeed were also jailed. The judges rejected a plea that Butt's sentence was "manifestly excessive" and the argument that Amir should have been given a suspended sentence. The Chief Justice said if corruption continued then the enjoyment of those who watch cricket would "eventually be destroyed".