Soccer-Real Cup hopes hit by second successive defeat (Reuters)

(Adds quotes, details)By Richard MartinBARCELONA, Jan 18 (Reuters) - Real Madrid lost 2-1 at home to Celta Vigo in their Spanish King's Cup quarter-final first leg on Wednesday to slump to their second defeat in a row following a record winning streak.Spain striker Iago Aspas, the top-scoring Spaniard in La Liga, gave the visitors a shock lead in the 64th minute by pouncing on a misjudged back-heeled clearance from Marcelo and showing composure to fire past a sea of defenders.Brazilian Marcelo m