I don't criticize Nevin much. I think that's an easy scapegoat for fans.
Sure it is frustrating when the team is trailing in a game by such as 2 runs in the 6th and you're hoping for a chance to come back. At the end of the day, the probability of coming back is actually very low in the big picture.
What if the Angels have a tight lead in the next two games and a couple of the top arms, say Soriano or Devenski pitched tonight. Well, obviously, they won't be rested.
You could say that these relievers can tough it out and throw multiple days in a row. Regardless, the game is managed differently now. A guy could be throwing a no-no through 7 with 110 pitches and looking fine. Still gets pulled because of pitch count. There are hard limits on certain things with pitchers now. All the TJ surgeries that have happened in baseball the last decade.
Would have liked to see Nevin go with a guy like Bachman at least though, instead of Mederos there.