MLB’s tickets for postseason Orioles games are running out — the official retail site only had a handful of playoffs games still open Monday evening, four days after sales went live. You can still grab tickets from resellers, though they could be pricier. SeatGeek is the MLB’s “official ticket marketplace,” though the main difference between using that website and others, like StubHub or Vivid Seats, is that the others will take a few more clicks.