South Korea say they are fully alive to the risk they face from Russia in dead ball situations in Tuesday's World Cup Group H game in Cuiaba. "The Russians are a lot taller than we are," Korean captain Koo Ja-Cheol told the pre-match press conference at the Arena Pantanal on Monday. The 2002 World Cup semi-finalists go into this opening game under a cloud, a 4-0 drubbing by fellow finalists Ghana on top of a 1-0 loss to Tunisia hardly the best way to boost morale.