The pitcher was doing well for the first four innings, then the wheels fell off in the fifth.投手前四局表现出色，但在第五局时突然发挥失常。The team widened their lead in the fifth inning.这支队在第五局扩大了领先优势。By the fifth game, I could see that my opponent was beginning to flag.到第五局时，我能看出我的对手开始累了。He entered the game in the fifth inning.他在比赛第五局出场。