Complex sentence: At the age of 17, Kostevych won the 10 m Air Pistol event at the 2002 ISSF World Shooting Championships, the 2003 ISSF World Cup Final, and the 2004 Olympics.
Split into simpler sentences: At the age of 17, Kostevych won the 10 m Air Pistol event at the 2002 ISSF World Shooting Championships. She followed this with a victory in the 2003 ISSF World Cup Final, and a following year at the 2004 Olympics.