Please answer the following question: Facts:   - death place: saint petersburg , russia    - caption: sizonenko and georg wessels    - height: 2.39 m ftin 0 on    - death date: 05 january 2012      - birth date: 27 july 1959    - name: alexander alekseyevich sizonenko    - image: alexander sizonenko.jpg    - birth place: zaporizhia , ukrainian ssr , soviet union   Based on these bullet points, write a short biography describing the life of alexander sizonenko .
Answer:
alexander alekseyevich sizonenko -lrb- ; ; 27 july 1959 -- 5 january 2012 -rrb- was a soviet basketball player .sizonenko was born in the city of zaporizhia , ukrainian ssr .possibly the tallest person to have ever played professional basketball , he was measured by guinness world records at and named the world 's tallest man in 1991 .sizonenko was said to have grown since this measurement was taken , although age reduced his standing height considerably .because of his enormous growth , his mobility was increasingly impaired .