He also did well with the new design; his personal best of 89.16, thrown at Potchefstroom, South Africa on March 1, 1991, was at the time the second best ever (excluding marks thrown with a soon-to-be-banned "rough-tailed javelin" that had been introduced by Miklós Németh), behind only Steve Backley's world record of 89.58 m.
Petranoff's mark with the old javelin design was never exceeded by any throw other than Hohn's mark.