Warren was drafted by the Seahawks in the fourth round of the 1990 NFL Draft.[2] Initially seeing action as a kick returner, Warren's breakout season as a professional came in 1992, when he rushed for 1,017 yards. He followed that season with three more years with at least 1,000 yards rushing, setting a career-high in 1994 with 1,545 rushing yards. In 1995, Warren set another career-best with 15 rushing touchdowns.
Warren was a three-time selection for Pro Bowl in three consecutive seasons (1993, 1994, & 1995). By the end of his stint in Seattle he held the Seahawks' career rushing record, logging 6,706 total rushing yards for the franchise from 1990 to 1997. In 2005Shaun Alexander eclipsed that record.
On December 1, 1994, Warren and teammates Lamar Smith and Mike Frier were involved in a collision in Kirkland, Washington, in which Smith's vehicle crashed into a utility pole. Warren and Smith walked away with minor injuries, while Frier took the brunt of the impact, becoming paralyzed from the waist down as a result.[3]
1995: AFC Pro Bowl Starter; Seahawks Most Valuable Player (Voted By Teammates); First-team All-AFC (Pro Football Weekly/Pro Football Writers Association, United Press International, Football News), Second-team All-NFL (AP, College and Pro Football NewsWeekly, Football Digest); All-Madden Team (Selected By FOX-TV's NFL Analyst John Madden)