Spain’s two-year unbeaten run under coach Julen Lopetegui continued with a 1-1 draw against Switzerland in Villarreal on Sunday. David de Gea’s incongruous mistake handed a dogged Switzerland side a 1-1 draw away to Spain in a pre-World Cup friendly. The Manchester United goalkeeper is regarded as being among the world’s finest but he spilled a shot from reported Arsenal target Stephan Lichtsteiner, presenting Ricardo Rodriguez with a tap-in. Spain were producing a commanding display to assert their status as one of the pre-tournament favourites prior to De Gea’s out-of-character error in Villarreal. Vladimir Petkovic’s determined Swiss outfit had kept…