Weight: 55 kg
- 6x Champion Jockey (PL): 2013, 2014, 2016, 2018, 2019, 2020
- 3x Derby Winner (PL): 2012, 2018, 2020
- 3x Arabian Derby Winner: 2015 (PL), 2020 (PL), 2020 (UAE)
- 1x Abu Dhabi Championships (PA) 2019
- 1x Al Maktoum Challenge R1 (G1 PA) 2019
- 1x Sheik Zayed Bin Sultan Al Nahyan Cup 2019
- 1x Grand Warsaw Prize: 1st in 2013, and 2nd in 2014
- 1x St. Leger 2018
- 3x Oaks 2012, 2014, 2015
- 2x Price of President TS 2018, and 2019
- 3x 2000 Guiness 2012, 2014, 2015
- 2x Al Khalediah Poland Cup 2019, 2020
Szczepan’s jockey career started in 2011. In 2012-2015, he worked for Adam Wyrzyk, a Polish trainer, at his private training center in Podbiel. Since then his career has gone from strength to strength. In August 2013, upon winning his hundredth race, he earned the title of Jockey, and – in the same year – won his first Jockey Championship.
Since the 2014/15 season, he has been riding regularly in the UAE, where he competes with top jockeys from around the world, and continues to climb the rankings. His cooperation with successful local trainer, Ibrahim Al Hadhrami, proved to be a fruitful one.
Szczepan’s key achievements: 6x Polish Champion Jockey, 3x Derby winner, 3x Arabian Derby winner, 1x Grand Warsaw Prize, 1x Sheikh Zayed Bin Sultan Al Nahyan Cup, 1x Al Khalediah Poland Cup.
Riding a purebred Arabian mare, Wadeeaa, Mazur dominated Group 1 of the Al Maktoum Challenge R1 during the 2019 Dubai World Cup Carnival. According to final classification of the 2019/20 racing season, Mazur ranked as the 7th best jockey in the United Arab Emirates.
Having won 77 races, Szczepan completed the 2020 season in Poland as a six-time Champion Jockey. His international number of wins stands at 635. In the current 2020/21 season, Mazur has established permanent cooperation with a well-known trainer, Musabah Al Muhairi at Oasis1 Stable.