Complex sentence: Langdon began his pro career with the Dayton Bombers of the ECHL, where he holds the record for most penalty minutes in a season, then played with Binghamton Rangers of the AHL, farm team for the New York Rangers.
Split into simpler sentences: Langdon began his pro career with the Dayton Bombers of the ECHL, where he holds the record for most penalty minutes in a season. He then played with Binghamton Rangers of the AHL, the farm team for the New York Rangers.