A combination of things--my being really bored; Alex's discovering how to make good-looking graphs for the blog and desperately wanting something to put in graph form; our recently discussing Pythagorean win percentage with regard to the 2005 Cavaliers--led to our tracking the Pythagorean win percentages of the three Cleveland franchises over their entire histories. This is just for fun, since it's kind of hard to make sweeping generalizations.
First, the Indians (1901-2004):
One thing you'll notice as soon as you see the Browns and Cavaliers graphs is that, the more games you play per season, the closer to .500 you always end up. This makes sense--it's easier to keep up a .750 win percentage over 16 games than it is over 160--it simply means that when a football team goes 14-2, say, it's almost certainly benefitting from more than a little luck. Using Pythagorean win percentage instead of actual accounts for some of this, but only a little. The NFL season is an
extremely small sample size. Let the 1972 Dolphins play 162 games in some sort of fantasy simulator, and I bet you they end up a lot closer to .700 (which would rank them among the greatest baseball teams of all time) than 1.000, their actual win percentage.
Anyway, the Indians graph doesn't tell us much that we didn't already know. They were unbelievable in '48, '54, and '95... and pretty horrible from about '59 to '93. If anything surprises me about this graph, it's how far below the '95 Tribe the '96-'01 teams were. The Central Division was really, really bad.
Now, the Browns (1950-2004):
As expected, the highs are higher--much higher--and the lows are lower. Much lower. I know it's a small smaple size, but the 2000 Browns are by far the worst team in Cleveland sports history. Even the 1899 Cleveland Spiders, the worst team in professional baseball history, managed a better Pythagorean win percentage. The funny thing about the '00 Browns (you know, "the Spergon Wynn year") is that, in winning their 3 games, they significantly
overachieved. When they lost, their margins of defeat were laughably huge, leading to an expected total of about 1.5 wins, 14.5 losses.
And is anyone else vaguely distubed by the overall downward trend of the Browns graph? I know this appearance is almost entirely due to the Browns debuting as one of the NFL's greatest dynasties in the 50's; it's just not pretty to look at.
Now, the Cavs (1971-2005):
Although this graph "sits" the lowest (meaning the Cavaliers have been the least successful franchise), it is not nearly as depressing as I would have expected. There were a few jaw-droppingly terrible years, yes, during which the Cavs set quite a few records for NBA suckitude, but a couple of the great years are quite impressive. Also, pretend you can see the next ten years of this graph. If the LeBron Cavaliers blossom into what we think they can, the graph will be quite pretty, as it alternates between valleys and (increasingly higher) peaks (the peaks being "Miracle of Richfield", late 80's, and, I'm pretending, LeBron).
Here's one with all three teams together since 1950:
Or, if those last few decades are a little too bunched together for you, since 1970:

Now, I know I might be reaching a little here, but it seems to me that there have been overall periods of success and failure across all three sports. The 1950's were clearly a period of success. The 70's and early 1980's were a down cycle. The late 80's and mid 90's were up. And the 2000's have so far been down. If you squint, you'll see it too.
That's it for the graphs. But while I have the data in front of me, I thought it might be interesting to compare the Pythagorean and actual winning percentages of each team in each season, to see, perhaps, which squads have over- and underachieved the most in Cleveland history. I'm going to keep the three sports separate, though, because otherwise the lists would contain nothing but Browns teams. Small sample size, again.
Here are the 5 most overachieving/lucky Indians teams (ie: teams that won more games than they should have):
Pythag. Actual Diff.
1907 Indians .504 .559 +.055
1995 Indians .644 .694 +.050
1910 Indians .418 .467 +.049
1954 Indians .672 .721 +.049
1929 Indians .488 .533 +.045
And here are the 5 most underachieving/unlucky (ie: teams that won less than they should have):
Pythag. Actual Diff.
1904 Indians .632 .570 -.062
1906 Indians .642 .582 -.060
1985 Indians .424 .370 -.054
1947 Indians .571 .519 -.051
1948 Indians .672 .626 -.046
Here are the 5 most overachieving/lucky Browns teams:
Pythag. Actual Diff.
1965 Browns .565 .786 +.221
1976 Browns .457 .643 +.186
1972 Browns .543 .714 +.171
1969 Browns .592 .750 +.158
1973 Browns .449 .571 +.122
And here are the 5 most underachieving/unlucky:
Pythag. Actual Diff.
1991 Browns .490 .375 -.115
1954 Browns .849 .750 -.099
1966 Browns .740 .643 -.097
1987 Browns .761 .667 -.095
1984 Browns .399 .313 -.087
Here are the 5 most overachieving/lucky Cavs teams:
Pythag. Actual Diff.
1985 Cavaliers .413 .439 +.026
2004 Cavaliers .404 .427 +.023
1992 Cavaliers .672 .695 +.023
1990 Cavaliers .490 .512 +.023
2001 Cavaliers .348 .366 +.018
And here are the 5 most underachieving/unlucky:
Pythag. Actual Diff.
1994 Cavaliers .638 .573 -.065
1982 Cavaliers .248 .183 -.065
1997 Cavaliers .574 .512 -.062
1980 Cavaliers .510 .451 -.059
1986 Cavaliers .409 .354 -.055
Among the notable "lucky" teams are the '95 Indians, the '54 Indians, and the '04 Cavs. Among the notable "unlucky" ones are the '48 Indians and the '87 Browns.
That's all I have for now. I don't know if any of this has been interesting to any of you, but I hope it has. If you're one of those who still doesn't believe that Pythagorean win percentage is a better indicator of team success than actual win percentage, I encourage you to express your arguments to me and I would be happy to continue the debate.