Pedzisa mutsara unotevera: Boslak's personal outdoor best is 4.70 metres, achieved at the
2006 European Cup muMalaga musi wa 28 Chikumi 2006 uye mumutambo wekupedzisira we 2007 World Championships muOsaka musi wa 28 Nyamavhuvhu 2007. Akawana zvakanakisisa zvake mukati me4.70m mukukunda menduru yesirivha musi wa11 Kurume 2012 pa2012 World Indoor Championships muIstanbul.