Complex sentence: This edition of the tournament was the first to be played in Oklahoma City; previous tournaments had been played in Kansas City, Missouri or Dallas, Texas and was the first Big 12 Basketball Tournament to end with an overtime game.
Split into simpler sentences: This edition of the tournament was the first to be played in Oklahoma City; previous tournaments had been played in Kansas City, Missouri or Dallas, Texas. It was also the first Big 12 Basketball Tournament to end with an overtime game.