• Mellis released by Chelsea after training-ground prank• 21-year-old scored for Rangers in reserve fixtureQPR have handed a trial to Jacob Mellis, who recently parted company with Chelsea after setting off a smoke grenade at their training ground.The midfielder, 21, played and scored in Rangers' 2-1 reserve defeat by West Ham United on Monday.Mellis, who spent last week training with npower Championship side Burnley, left Chelsea "by mutual consent" last month after admitting to the smoke-grenade prank.Monday's match also featured the QPR strikers Heidar Helguson and DJ Campbell, who were returning from injuries that had sidelined them for m...