LONDON, Sept. 18 (Xinhua) -- Marcus Rashford made a dazzling Champions League debut for Barcelona, inspiring them to a 2-1 victory on Thursday as Newcastle United's campaign began with defeat at St James' Park.

On loan from Manchester United, Rashford proved the difference with two quick-fire second-half goals that silenced the home crowd and left England manager Thomas Tuchel watching on impressed.

The breakthrough came on the 58th minute when he rose to meet Jules Kounde's cross with a precise header past Nick Pope. Nine minutes later, he delivered an even better strike - a thunderous 20-yard effort that crashed in off the crossbar, leaving Pope with no chance. They were Rashford's first Champions League goals in nearly four years.

It was a standout performance from the 26-year-old, who spent last season on loan at Aston Villa in Europe's top competition. This time, he was central to Barcelona's formidable attacking unit, even in the absence of injured teenager Lamine Yamal.

Newcastle boss Eddie Howe raised eyebrows with his team selection, leaving 69 million-pound signing Nick Woltemade on the bench and opting for Anthony Gordon in a central role. Gordon struggled to influence proceedings, while Rashford punished Newcastle with ruthless finishing.

The striker left the pitch to a standing ovation from the visiting supporters when he was substituted 10 minutes from time.

Gordon did pull one back for Newcastle deep into stoppage time, but Barcelona held firm to secure the win. ■