2008 Phoenix Mercury season

The 2008 WNBA season was the 12th for the Phoenix Mercury. The Mercury were not able to win their second consecutive WNBA Championship and became the first defending champion to not qualify for the playoffs.

Offseason
On September 27, 2007, head coach Paul Westhead resigned and took a job as an assistant coach under P.J. Carlesimo for the Seattle SuperSonics. Assistant coach Corey Gaines was named the team's new head coach on November 7 of that year.

Expansion draft

 * Jennifer Lacy was selected in the 2008 Expansion Draft for the Atlanta Dream.

Regular season
Phoenix Mercury Regular Season Stats

Awards and honors

 * Diana Taurasi, WNBA Player of the Week (June 2–8, June 16–22, June 23–29, and September 1–7)
 * Cappie Pondexter, WNBA Player of the Week (July 14–20)
 * Diana Taurasi, WNBA Peak Performers (Points)
 * Diana Taurasi, All-WNBA First Team