Complex sentence: He defected to Switzerland in December 1948 during an ice hockey tournament in Davos, and spent five years as a player and coach there before emigrating to the United States where he became a librarian and library administrator.
Split into simpler sentences: He defected to Switzerland in December 1948 during an ice hockey tournament in Davos, spending five years as a player and coach. Sláma emigrated eventually to the United States where he became a librarian and library administrator.