Complex sentence: The BBWAA Chapter honored Slocum in 1930 by naming an award after him, which is presented annually to a person judged to have given long and meritorious service to baseball.
Split into simpler sentences: The BBWAA Chapter honored Slocum in 1930 by naming its Slocum Award after him. The award is presented annually to a person judged to have a long and meritorious service to baseball.