Walker is postseason-eligible and can be added to the playoff roster if someone goes on the disabled list -- which, given the Orioles' roster juggling, is not outside the realm of possibility. Sure, he's been around for like an hour. But he can hit, the Orioles are thin at first base, and they had to bring him up for a reason. In today's climate, teams just don't add players to the 40-man roster before they have to. If the Orioles just wanted someone to spell Steve Pearce, they could have pieced the last week of the season together with Kelly Johnson and Ryan Flaherty. But they haven't, so Walker could get a chance to push his way onto the roster this week.
Kenneth K. Lam, Baltimore Sun