Complex sentence: For 1992--93, he was promoted to an assistant coaching position in St. Louis under head coach Bob Plager; however, he remained in that position for only a year before being replaced by new head coach Bob Berry.
Split into simpler sentences: For 1992--93, he was promoted to an assistant coaching position in St. Louis under head coach Bob Plager. However, he remained in that position for only a year before being replaced by new head coach Bob Berry.