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He probably 'sensed' that there was some possibility of injuring the leg further. And wanted a day-and-a-half (it says here) to stay safe. Probably the whole year will be peppered with such minor impediments.
The 'Bach subplot is becoming really fascinating, wouldn't you say? The GM's always challenge them, "Force my hand." Well, didn't 'Bach have a 7-PA streak on base a couple days ago? It's blinkin' ridiculous at this point.