In December 2014, Lewis was hired as the head coach of the Belarusian national team. The contract was for one year with the possibility of extension up to the 2018 Olympics. Lewis has been the head coach for Belarus at the 2015, 2016, 2017, and 2018 World Championships. However, the team fell just short of qualifying for the 2018 Olympics. Lewis was fired just three games into the 2018 World Championships after Belarus lost all three games.