 She had sat down to sign autographs when she felt her knee lock, forcing her to undergo an operation five weeks prior to the 1984 Summer Olympics, which were going to be held in Los Angeles—the first time the Summer Olympics had been held in the United States in 52 years.She recovered just in time for this most prestigious of tournaments, and in the competition, which was boycotted by the Soviet bloc nations except for Romania, Retton was engaged in a close battle with Ecaterina Szabo of Romania for the all-around gold medal.Trailing Szabo (after uneven bars and balance beam) by 0.15 with two events to go, Retton scored perfect 10s on floor exercise and vault—the last event in an especially dramatic fashion, as there had been fears that her knee injury and the subsequent surgery might impair her performance.