Complex sentence: In their first year of play in the United Hockey League, the Riverdogs won the Eastern Division in the regular season and made the playoffs but only to lose in the first round to the Elmira Jackals.
Split into simpler sentences: In their first year of play in the United Hockey League, the Riverdogs won the Eastern Division in the regular season and made the playoffs. Only to lose in the first round to the Elmira Jackals.