So the reason for putting someone in that position may well be that they may not be the best pitcher but they're better at managing the pressure of the situation. That is a specialization I guess.
Reductionist and proud of it.
Being ignorant is not so much a shame, as being unwilling to learn. Benjamin Franklin
Chase after the truth like all hell and you'll free yourself, even though you never touch its coat tails. Clarence Darrow
A person who won't read has no advantage over one who can't read. Mark Twain