Complex sentence: She was often overshadowed by Maria Butyrskaya and Irina Slutskaya near the beginning of her career (1999-2002), Elena Sokolova in 2003 and strugled with injuries in 2004,2005 and 2006.
Split into simpler sentences: She was often overshadowed by Maria Butyrskaya and Irina Slutskaya during the beginning of her career (1999-2002), and by Elena Sokolova in 2003. She strugled with injuries in 2004,2005 and 2006.