And then you remember Nikola Kalinic.
The AC Milan striker, once of Blackburn, was supposed to be vital back-up for Mario Mandzukic in Zlatko Dalic's squad but when he was called upon against Nigeria in the group stage at 2-0 up, he refused to come on.
Kalinic, 30, said he had a back injury and thus couldn't play but the coach and medical teams did not believe him and the veteran forward was sent home from the tournament.
"During the Nigeria encounter, Kalinic was warming up and was supposed to come on in the second half," Dalic said at the time.
"However, he then stated that he wasn't ready to come on due to a back issue. The same thing happened during the Brazil friendly in England, as well as before the practice session on Sunday.
"I have calmly accepted that, and since I need my players fit and ready to play, I have made this decision."
Even a man short and with two-hour knockout games and penalty shootouts being thrown at them, Croatia continued on through and overcame England after extra-time to reach the World Cup final.
Kalinic will be watching on from home, you'd guess, but a penny for the thoughts of the man who turned his back (problem) on the smallest country to reach a World Cup final since Uruguay in 1950, a time when football was barely even the same sport as it is today.
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