NAPA Auto Parts ArenaBowl XXIII was an arena football game between the National Conference champion, Spokane Shock and the American Conference Champion, Tampa Bay Storm. The Spokane Shock won the game successfully defending ArenaCup X of the former af2. The game was played on August 20, 2010, and was held at the Spokane Veterans Memorial Arena in Spokane, Washington, the first non-neutral site since 2004 (ArenaBowl XVIII). The game was shown live on the NFL Network, as well as a tape delay on Eurosport 2. The corporate sponsor was NAPA Auto Parts.

See: 2010 Tampa Bay Storm season

Looking for their sixth championship in franchise history, and first since ArenaBowl XVII in 2003, the Tampa Bay Storm succeeded in their first season back since 2008. Led by quarterback Brett Dietz, who threw for 5,054 yards and 106 touchdowns in the regular season (both franchise records), they finished 11–5, 2nd in the South division, and 3rd in the American Conference.

See: 2010 Spokane Shock season

The Spokane Shock, fresh off their ArenaCup X victory in what would be the last arenafootball2 season, earned their spot in the postseason by going 13–3 in the regular season, the AFL's best record in 2010, which gave them home field advantage throughout the entire playoffs. It's the Shock's first ArenaBowl in franchise history, having three previous ArenaCup appearances in af2.

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