BP Daily: The problems with Papi

When a star player struggles, his performance raises questions about what is causing the problem, how long the slump could last and, most importantly, how to fix it. The problems of Red Sox designated hitter David Ortiz have garnered much attention during the season's first month. To break down what Red Sox fans want to know about Ortiz, Baseball Prospectus brings three separate lenses to analyze his dip in performance.

Performance analysis