 Complete the following phrase:  Later that year, Varlamov established himself as the starting netminder for Russias under-18 squad at the 2006 IIHF World U18 Championships and finished in fifth place. He began the 2007 Super Series as Russias starter at the under-20 level, but was later pulled in the series in favour of Sergei Bobrovsky. He regained the starting position at the 