 Complete the following phrase:  The following year he competed with the 6 kg junior implement and won the shot put title at the 2008 World Junior Championships in Athletics with a mark of 21.08 m, which made him the fourth-best junior of all time. In 2009, he began using the full senior weight 7.26 kg in the indoor season and achieved a best of 19.48 m. Returning to the junior 6 kg shot in the outdoor season, he became the first ever junior athlete to throw beyond 22 metres in Mannheim, setting consecutive world junior records of 22.18 m and then 22.34 m. A month later he increased this mark to 22.73 m in Osterode putting some distance between himself and the Edis Elkasevics former record of 21.96 m, and went on to win the 