It could be backup catcher Chad Moeller, but because of the nature of Posada’s injury and the position he plays that’s probably not a smart idea, especially as Posada is expected to DH through this weekend.
It could be Juan Miranda, as his at-bats will take a big hit with Posada as the team’s DH. The problem here is that Mark Teixeira is day-to-day as he left yesterday’s game early after fouling a ball off his foot. If Miranda is sent down then there's no insurance at first base while Tex is questionable.
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