Mateusz Kieliszkowski rose to prominence after winning the 2014 Arnold Amateur World Championship and became the youngest competitor in Arnold Strongman Classic history in 2015, placing third. Kieliszkowski is a five-time Poland’s Strongest Man and has twice finished as runner-up at the World’s Strongest Man competition (2018, 2019), earning a reputation as one of the strongest athletes never to win the title. Known for his exceptional pressing ability, he holds world records in events such as the Cyr Dumbbell Press (145 kg), the 400 kg timber carry, and the 450 kg car walk.