A bevy of crashes, some serious, at the 1992 Indianapolis 500 injured several drivers, and shook up the driver lineup during parts of the season. Jovy Marcelo was fatally injured in a practice crash, while Nelson Piquet suffered devastating leg injures in another practice crash. Hiro Matsushita suffered a fractured leg and missed several races over the summer. Mario Andretti, Rick Mears, and Jimmy Vasser all sat out the race at Detroit while they recovered from injuries. In July, Mears dropped out of the Michigan 500 with nagging injuries, and ultimately sat out the rest of the season. Mears then unexpectedly retired from racing in December.