The newly minted 1982 Los Angeles Raiders season finished the 1982 NFL strike 1982 NFL season 8-1 to win the AFC West, but lost in the second round of the 1982-83 NFL playoffs to the 1982 New York Jets season. The 1983 NFL season, the 1983 Los Angeles Raiders season finished 12-4 to win the AFC West. Convincing playoff wins over the 1983 Pittsburgh Steelers season and 1983 Seattle Seahawks season in the 1983-84 NFL playoffs propelled the Raiders to their fourth Super Bowl. Against the 1983 Washington Redskins season in Super Bowl XVIII, the Raiders built a lead after blocking a punt and recovering for a touchdown early in the game. A Branch touchdown reception from Plunkett put the Raiders up 14-0 with more than nine minutes remaining in the first quarter. With seven seconds remaining in the first half, linebacker Jack Squirek intercepted a Joe Theismann swing pass at the Washington five yard line and scored, sending the Raiders to a 21-3 halftime lead. Following a John Riggins one-yard touchdown run (extra point was blocked), Marcus Allen scored from five yards out to build the lead to 28-9. The Raiders sealed the game with Allen reversed his route on a Super Bowl record run that turned into a 74-yard touchdown. The Raiders went on to a 38-9 victory and their third NFL championship. Allen set a record for most rushing yards (191) and combined yards (209) in a Super Bowl as the Raiders won their third Super Bowl in eight years.
Question: How many interceptions did Theismann throw in the first half?
Answer: 1