The search results do not contain information about the MLB game between the Pittsburgh Pirates and Chicago Cubs on April 18, 2008. All available game stories and box scores refer to games played in 2026, with the closest date being April 11, 2008 (a 6-4 Cubs win) or April 10/11, 2026 games. No data exists for the specific April 18, 2008 matchup in the provided sources.