Jack Morris was basically the same player in the playoffs that he was in the rest of his career. Did he have an amazing game seven in 1991? Yes, he did. But he also had his fair share of playoff clunkers. Derek Jeter is basically the same player in the playoffs that he has been in the regular season. Sandy Koufax was a monster in the playoffs but that's most due to the fact that he was a monster pitcher, period. His playoff ERA, while ridiculous, isn't that much better than his regular season ERA during his dominant seasons in the early 60s. The same applies to Bob Gibson. Lengthy studies have been done on this subject and in baseball, players have clutch moments. But there is no discernable proof that particular players are consistently clutch. As humans, we have a tendency to remember good moments and discard mediocre ones. We remember Mr. November but don't remember the two times Jeter may have weakly popped out earlier in the game. Some players, through SSS, have amazing postseason numbers. But as those players get more playoff exposure, they tend to regress to their mean or in cases like Barry Bonds, progress back up to their mean (Bonds' playoff stats are still below his career norms but after his 2002 playoff run, they climbed relatively close to his career average). The great thing about baseball is that we have a wealth of numbers to look at and break down the game; far more than any other sport. If Derek Jeter truly was "clutch", wouldn't he perform just as well in a tie game in the bottom of the ninth in June as he would in the playoffs? The game is on the line and if he could simply flip a switch into "clutch mode", he would do it all the time, all season long. The numbers show that this simply isn't the case and if a player can't deliver the "clutch" goods in June, what makes anyone think he'd be able to do it in October? Because the game is even more on the line? That doesn't pass any kind of critical thinking test. Derek Jeter is a very good baseball player whose "game on the line" stats are the same as his "all other times" stats. Why? Because, if given enough playoff opportunities, every player ends up that way. If there truly was a clutch hitter, we'd be able to identify them easily based on their regular season performances. We can't because they just don't exist. Here is a great article on the subject: http://www.baseballprospectus.com/article.php?articleid=2656