Complex sentence: In St. Louis, Sanderson set career highs in assists and points scored in a season with 43 assists and 67 points, but problems with alcohol and his recurring knee problems led Blues management to trade him in 1976-77 to the Vancouver Canucks.
Split into simpler sentences: In St. Louis, Sanderson set career highs in assists and points scored in a season with 43 assists and 67 points. Again Sanderson's problems with alcohol and his recurring knee problems would lead Blues management to trade him in 1976-77 to the Vancouver Canucks.