It was an odd thought. If they were to reach for any analogue at all, most people would probably think first of Bjorn Borg and John McEnroe's 1980 Wimbledon final, with a fourth-set tiebreaker that went to 18-16. That's assuming they thought it worth the effort to try to draw any comparisons at all. At this point, Isner-Mahut defies most of them.
Consider the following:
• at 7 hours, 6 minutes in length, the fifth set alone eclipsed the duration of the longest tennis match in history by 33 minutes;
• Isner has already broken the record for aces (78) by a solid 20 (98);
• Mahut has broken it by 17 (95);
• they are tied at two sets and 59 games apiece;
• 59 games is enough to win over three different matches in straight sets;
• the match is not over.
This is no ordinary degree of overtime. During the broadcast, increasingly loopy broadcasters whom one suspects were obliged to urinate in empty jars behind the desk on set kept mentioning sports overtime anomalies that might seem comparable and failing. There are none. Not only has no one done anything like this in tennis; no one has done anything like this ever. The longest baseball game in history went 25 innings over eight hours. Isner and Mahut have been playing this match for ten hours over two days, set to try to conclude it on a third.Another reason not to think back to Borg-McEnroe is that it's likely to be the default analogy for sportswriters looking for sloppy means of putting this match into perspective. Why bother?—everyone else will do it for you. Journalists in general don't like to work without comparative examples: it's why they measure everything in Rhode Islands. But sportswriters in particular seem beholden to forcing analogies, even if the only purpose is to break them later. Take the Boston Red Sox's incredible comeback against the Yankees and first World Series title in 86 years. Even then the default strategy for demonstrating the scale of the achievement was to labor to liken it to something else, only to explain why the similitude failed. This was totally unique because it was just like these other things, except for how it wasn't.

