Sankovich showed a tremendous improvement on the international scene at the 2014 European Championships in Berlin, Germany, overhauling the 52-second barrier in the 100 m butterfly to produce his own lifetime best (51.92) and collect his first ever bronze medal of the meet. The 2015 season brought a stellar feat for Sankovich, as he swam a career best and the world's third fastest time (51.57) in the 100 m butterfly at the Belarus Open, but could not beat his rival Yauhen Tsurkin, who was faster by 0.13 of a second, lowering the Belarusian record.