Joelinton fired Newcastle a step closer to Wembley with the winner in an action-packed Carabao Cup semi-final first leg success at Southampton.The Brazilian, who also saw a disallowed goal and was guilty of a bad miss, secured a 1-0 win for the Magpies by burying a low cross from substitute Alexander Isak with 17 minutes to go on a breathless evening at St Mary's.Saints thought they had swiftly levelled through Newcastle academy graduate Adam Armstrong but his bundled effort was ruled out for handball following VAR intervention.Joelinton had a first-half effort controversially chalked off for an adjudged handball, while he wastefully blazed over with the goal gaping early in the second period.Southampton finished a frantic encounter with 10 men after defender Duje Caleta-Car was dismissed four minutes from time for a second bookable offence.The hosts had sufficient chances to head to the north-east level but Nick Pope was in inspired form to stop Che Adams, in addition to Armstrong's disappointment against his boyhood side.FULL MATCH DETAILSNewcastle arrived on the south coast with manager Eddie Howe urging his side to go a step further as the club chase a first major domestic trophy since 1955.The high-flying Magpies stuck with the team which began Saturday's goalless Premier League draw at Crystal Palace, while struggling Saints made four changes, including full debuts to January signings Carlos Alcaraz and Mislav Orsic.Howe's men had the better of an uninspiring opening period which lacked quality and chances but contained a major talking point.Newcastle midfielder Joe Willock was at the heart of the most promising openings.The former Arsenal player twice fired woefully over when unmarked, before sparking the