Thanks, Dev!
The time (1950) was just an idea, and it certainly is not fixed. The website Reza referred to actually can be of some help, but it is not practical since I would like the data at large scale.
In fact, I would also like to see other data:
1. the number of matches played by major European clubs every year
2. the number of matches star players have played every year (including NT duties, club matches)
3. the number of matches missed due to injury/fatigue by players/clubs
At this point, I don't need some complete or exhaustive data set (wouldn't mind that of course), but I just want to have enough samples to show a trend. I am interested in the history of competition between major European clubs and NT over star players, so any related data/literature would help.
This is the only site that I post for help (even though I realize that there are more football fan sites out there that I am registered for). Thanks to everyone who is willing or able to help.
The time (1950) was just an idea, and it certainly is not fixed. The website Reza referred to actually can be of some help, but it is not practical since I would like the data at large scale. In fact, I would also like to see other data:
1. the number of matches played by major European clubs every year
2. the number of matches star players have played every year (including NT duties, club matches)
3. the number of matches missed due to injury/fatigue by players/clubs
At this point, I don't need some complete or exhaustive data set (wouldn't mind that of course), but I just want to have enough samples to show a trend. I am interested in the history of competition between major European clubs and NT over star players, so any related data/literature would help.
This is the only site that I post for help (even though I realize that there are more football fan sites out there that I am registered for). Thanks to everyone who is willing or able to help.




), but never heard back from them. I don't think I will want to try it again anytime soon. 
That was helpful. 