Three days after Alexis Mac Allister won the World Cup with Argentina, his Brighton team-mates were on the wrong end of a penalty shoot-out defeat, following a scoreless draw with Charlton.The stakes may not have been quite so high, but nonetheless the Premier League Seagulls came a cropper at the League One side in the fourth round of the Carabao Cup.While Mac Allister partied in Buenos Aires, having been given a fortnight off following his heroics in Qatar, the rest of the Brighton team faced a far less appealing trip to chilly south-east London as domestic football resumed.And when Addicks keeper Ashley Maynard-Brewer saved Moises Caicedo's penalty, Sam Lavelle hit the winning spot-kick as Charlton reached the last eight, 4-3 on penalties, after the goalless draw.Nottingham Forest reached the quarter-finals for the first time since 1994 with a comfortable 4-1 victory over Blackburn at Ewood Park.Wales international Brennan Johnson scored twice on his return to action after the World Cup, while Jesse Lingard and Taiwo Awoniyi were also on target.Johnson fired the visitors in front when he neatly dispatched a penalty in the opening minutes after being brought down inside the box by Scott Wharton,.Wharton then made up for conceding the early penalty with a header to bring Blackburn level at the break.Lingard put the away side back in front with a deflected free-kick and the visitors wrapped things up with two goals in the final 10 minutes to send Forest through to the last eight.