Complex sentence: Kaliszek/Spodyriev competed in three 2015--16 Challenger Series competitions--after placing 7th at the 2015 Nebelhorn Trophy, they won bronze at the 2015 Mordovian Ornament and silver at the 2015 Warsaw Cup.
Split into simpler sentences: Kaliszek/Spodyriev competed in three 2015--16 Challenger Series competitions. After placing 7th at the Nebelhorn Trophy, they won bronze at the Mordovian Ornament and silver at the Warsaw Cup.