His personal best throw is 88.70 metres, achieved in June 2001 in Stuttgart at age 39. This ranks him third among German javelin (new implement) throwers, only behind Raymond Hecht and Boris Henry.  His personal record was the last of several progressions of the Masters M35 world record over the previous 4 years. His final record was to last less than a week because current world record holder Jan Železný had turned 35 three weeks earlier. In his first competition after turning 35, Železný took the M35 world record improving three times that day en route to setting the current M35 standard while winning the 2001 World Championships in Athletics. Two years later, Blank set the M40 world record which again lasted three years until it was surpassed by Železný. In 2007, Blank set the M45 world record, surpassing the record by Larry Stewart that had stood for 21 years. That record continues to stand, not surpassed by Železný when he turned 45, or anybody else.