Pinch Running for Estrada?

Some people may question Cox's decision not to pinch run for Estrada with one out in the ninth inning of a 4-3 game, but I think Cox was consistent with his usual strategy in that situation, and I agree with him. He will often keep the slow runner on first with fewer than two outs, only to pinch run if he advances into scoring position. You give up the possibility of scoring from first on a gapper, but the far more likely scenario would be an advancement to second or third base on a walk or single. At that point you pinch run in case of another hit or sacrifice fly. If Cox pinch-runs immediately, and the runner is then forced out, you've lost your catcher.