 During the first month of the football season, the playing field included the infield soil that is harder than the grass and is also a significant injury risk.Baseball purists disliked artificial turf, though the Cincinnati Reds took advantage of this on Riverfront Stadium's artificial turf; on offense by recruiting players who combined power and speed and encouraging line drive hitting that could produce doubles, triples and high-bouncing infield hits; while for defense the fast surface and virtually dirtless infield rewarded range and quickness by both outfielders and infielders, like shortstop Dave Concepción who used the turf to bounce many of his long throws to first.The concrete or painted concrete façades of many stadiums of that era (multipurpose or sport-specific) were criticized by architects as uninviting.