Does the coach has to change the picher at 3/4 of the innings. If hes not messing it up, why changed?? Is it part of the rules or player agreement? Ive notice this shit had caused many games. Like we all say, if its not broken, dont fix it.
They bring in a fresh arm so they can continue to throw at a high speed accurately and keep movement on their pitches. Fatigue eventually sets in which is why they go to the bullpen.
Thank you Fly for the value info. I must admit some of this decision really go opposite of the expectation. Like early game, Cahill was doing a terrific job keep the bases empty. Then the coach bring the bullpen amd second and third were loaded. They ended up changed again which save the inning but still some of this change can really mess up your momentum..