erected two temporary seating sections in the ballpark. The resulting 936-seat section along the third-base line and the 1,249-seat section on the left field lawn increased Miyagi's capacity from 23,466 to 25,651. The seats opened to fans that September. However, NPB had been pushing Rakuten to increase the stadium's capacity to at least 28,000, specifically if the stadium needed to host Japan Series games, therefore Rakuten continued to add more temporary seating in early October as the postseason neared. Before it hosted its first Final Stage during the 2013 Climax Series, more temporary and standing seats brought the stadium's capacity to 26,965. Finally, the addition of 1,155 standing seats before the 2013 Japan Series brought Miyagi Stadium's capacity to 28,120. Following the Japan Series, the temporary stands down the third-base line and in left field were dismantled. In the offseason, another temporary seating section was constructed in left field, bringing capacity to 25,717. Five months later, work was completed on new, permanent seating in the former location of the temporary stands down the third-base line. The 3,019-seat section pushed the stadium's capacity over 28,000 once again. The last large-scale renovation of Miyagi Stadium occurred in the 2015–16 offseason that dramatically increased its capacity one last time. The project removed the temporary stands in middle-left field that could seat approximately 4,000 spectators and instead constructed a park capable of accommodating around 7,000, bringing Rakuten Seimei Park to its current capacity of 30,502 people. Field From its opening in 1950 until 2004, Miyagi Stadium's playing field featured a natural turf outfield and a dirt infield; the distances from home plate to the outfield wall were symmetrical: to the foul poles and to the center field wall. Rakuten's first renovation of the stadium prior to the 2005 season dramatically changed the field. The foul poles were pushed back to , the longest in NPB at the time, and also extended the left- and right-center field walls to . Two seating sections were also constructed on the field along the first and third baselines, greatly reducing the stadium's foul territory. Additionally, this renovation converted the natural turf and dirt field playing field to an artificial surface using FieldTurf. This artificial turf had to be replaced once after the 2007 season. The outfield dimensions changed one last time during the 2012–13 offseason when two new seating sections were built in left- and right-center fields that