While serving as referee of the 1999 NFC Championship game between Tampa Bay and St. Louis, Carollo overturned a catch by Tampa Bay's Bert Emanuel, that later led to the adoption of the Bert Emanuel Rule.
The refereeing decision made by Carollo during the 1999 NFC Championship game between Tampa Bay and St. Louis, which overturned a catch by Bert Emanuel, led to the adoption of the Bert Emanuel Rule.