AMSTERDAM — Marc Pelosi officially began his career at Liverpool on Wednesday night by dressing for the reserve side's 5-1 UEFA NextGen defeat at Sporting CP. The US Under-17 standout, who recently inked a three-year deal with the Reds, did not see the field in a group match of a tourney that is essentially an U-19 Champions League. Despite the defeat, Liverpool became the fifth team through to the knockouts, joining Group 2 winners Sporting, Ajax, Barcelona and Tottenham. According to the