Pivirotto appeared internationally for the first time at the 2014 Junior World Championships in Erzurum and was eighth in the relay. He made his World Cup debut in November 2014 in Salt Lake City . He finished 24th and 12th over 1000 m and achieved his first podium finish in the World Cup with third place in the relay. At the 2015 World Championships in Moscow , he took eighth place in the relay. In the 2019/20 season he came in 30th overall with two top ten placements over 1000 m. At the Four Continents Championships in Montreal in 2020 , he came in 13th place in the all-around competition and won the bronze medal with the relay.
Personal bests
500 m 40.938 sec. (installed on November 13, 2016 in Salt Lake City)
1000 m 1: 25.322 min. (installed on November 4, 2016 in Calgary)
1500 m 2: 15.517 min. (installed on November 18, 2017 in Seoul)
3000 m 4: 59.433 min. (erected on January 18, 2015 in Salt Lake City)
United States