protruded from the existing outfield seating. These new sections effectively created a "lucky zone" on the field, a Japanese term that describes moving an outfield wall to make hitting home runs easier. The additions reshaped Rakuten Seimei Park Miyagi's field to its current dimensions of to each foul pole and and 122 metres to the outfield walls in left/right-center and center fields, respectively. Miyagi Stadium's artificial turf was eventually removed and natural grass was again introduced prior to the start of the 2016 season. Instead of the black soil used in Koshien Stadium's infield, Miyagi Stadium's infield uses the red clay featured in MLB ballparks. It remains the only natural turf field in the Pacific League. Scoreboard and video board Miyagi Stadium's first, simple outfield scoreboard only displayed the game's line score. It was demolished and replaced with a larger, partially-electric scoreboard prior to the start of the 1973 season. In addition to the new electric inning-by-inning scoring and indicator lights, the new board featured handwritten batting lineups and umpire listings as well as a clock. This scoreboard was used until 2004, when it was demolished on December 6 during Rakuten's renovation of Miyagi Stadium. The stadium's third scoreboard iteration was installed in March 2005, just before the start of the Eagles' inaugural season. The board was created by Toshiba and its layout was similar to its predecessor; the lineups and line score, however, were presented via electric display along with the batter’s average and pitching speed. New to the scoreboard was an full-color LED screen. During the 2009–2010 offseason, an Aurora Vision video board developed by Mitsubishi Electric was installed in right-center field. The high-definition LED screen is one of the largest in an outdoor stadium in Japan and was seven times larger than the screen embedded on the scoreboard at the time. The screen was erected to the right of the scoreboard to block the view of residents of an apartment building located behind the stadium's right-center field bleachers. Six years later, the center-field scoreboard was renovated for a third and final time; it was converted to a Panasonic full-LED video screen capable of displaying additional team and player statistics. Smile Glico Park and amusement rides When the newly-renovated Miyagi Stadium opened in 2005, Rakuten Mountain, the left-center field seating area, was a turf lawn until a temporary seating section was erected there in 2013. During the 2015–16