I believe there was a study done a couple of years ago on clutch. It's pretty simple: if a guy is a 'clutch' hitter, then the numbers should reflect that year after year. They don't. The conclusion of the study was that 'clutch' was simply chance. Also, our minds are bizarre. We will remember Papi's 'clutch' grand slam (and maybe Victorino's as well). What we will forget is that in close games like these, all AB's were clutch situations. And Papi, in his two-dozen chances or so, and Vict as well, failed miserably. As one poster above said, there is no 'clutch' hitting; there is 'hitting'. And Nava, over 162 games, has proven to be a better hitter than anyone on the team except Papi, and a significantly better hitter than the dude who has replaced him.