MABANK, Texas -- Former two-time All-Pro linebacker Isiah "Butch" Robertson was killed when the limousine he was driving skidded on a rain-slicked curve on a dark, rural East Texas highway and was hit by two other vehicles. The Texas Department of Public Safety reports the crash happened about 10 p.m. Thursday on Texas Route 198, about 50 miles southeast of Dallas. A DPS statement says the limousine driven by Robertson entered the curve at an unsafe speed for the rainy conditions, veered off the road and skidded sideways before coming to a stop partially on the road. A pickup truck following behind hit the limo, knocking the limo into the southbound lane where it was slammed by an oncoming car. Robertson, 69, was taken to a hospital in Athens, Texas -- about 20 miles away -- where he died.