45 Consecutive Retired Batters

Jim Buehrle pitched 1-2/3 perfect games, very exciting, and set the major league record with 45 consecutive retired batters. Very impressive. What surprised me was that I learned the previous record was 41, and not held by Harvey Haddix. You see, for a long time, my favorite baseball trivia question to pose to other fans is "What is the significant major league record least likely to ever be broken?"

Of course, that is far to open-ended to lead anywhere conclusive, but it is a fun though-provoker. I eventually narrow the question to "major league pitching record", but still nobody ever gets the answer: most perfect innings in a single game. That record is held by Harvey Haddix, but what makes the story better is that his team lost the game!