In such large databases mistakes are not uncommon regardless of the platform. The point is that wikipedia is not a source, and transfermarkt absolutely is better to reference. Especially when you consider a lot of what is on wikipedia in terms of data comes from transfermarkt, except it's being copied over by a random user which increases the chance of introducing error.
Anyway, if your focus is on one incident that you can't quite recall and that is your basis for saying transfermarkt is as unreliable as wikipedia, that's fine. The message is the same and that's your choice.
While that may be true, it's the only mistake I recall seeing. What's more we're not talking a goal or an assist, but it was multiple goals. I've never come across such an instance using Wikipedia either, granted I don't use it much. So for me Transfermarkt isn't better to reference much less absolutely so. As for how much data to Transfermarkt comes from Wikipedia, I wouldn't know and I'd be curious how you would. Yes, I know they cite the sources on there, but in the two cases mentioned in this thread I'm not seeing Transfermarkt being cited for either player's stats when I look at their respective Wikipedia entries.
But again, wikipedia doesn't actually track the stats, it's just a place for people to compile information from other sites/sources.
We all should've voted for Kane and Eriksen.Who are the clowns voting for Messi this year?