The job of any international team manager in picking 23 players for a squad isn't as simple as many presume.
It's not just selecting the best players of a certain nationality and then forming a team out of the numbers.
The coach should select those that fit technically and tactically within their philosophy, whilst ensuring they maintain the right balance of personalities in the dressing room.
There are some players who perform exceptionally for their club, but they are unable to replicate that form for their country.
Likewise, some will canter through a season to no great effect, yet look world beaters when representing their nation.
Here are the best 11 players who haven't made Portugal's World Cup squad:
Statistics from Wikipedia unless stated