After Ben Shibe's death in 1922, sons Tom and Jack represented the Shibe interest in the team and in 1925 they replaced the 1913 open left field bleachers with a double-deck that extended from the foul pole to the center field corner. This construction covered the "terrace" except in the deepest part of center field which still had a slight upslope. Where the upper deck of the main stands abutted the upper deck of the bleachers, there was a slight overhang. Whether this ever affected play is unknown. They also extended the upper deck out over the pavilions. These expansions resulted in another 10,000 seats. In 1928, the brothers installed a mezzanine that added 750 pricey box seats and the following year they raised the original grandstand roof and installed a press box underneath it, along with 3,500 more seats.