The way that many seats were situated forced some fans to crane their necks to see the area between the pitcher's mound and home plate. Some fans near the foul poles had to turn more than 80°, compared to less than 70° with the original Yankee Stadium or 75° at Camden Yards. For that reason, the seats down the left-field line were typically among the last ones sold; the (less expensive) outfield lower deck seating tended to fill up sooner. Nearly 1,400 seats had obscured or partial visibility to the playing field – some of them due to the right-field upper deck being directly above (and somewhat overhanging) the folded-up football seats behind right field; and some of them due to steel beams in the back rows of the upper deck which are part of the dome's support system.