 Complete the following phrase:  Doubleheader allotments were often assigned with restrictions because of other network commitments. This happened during Finals Sunday of the U.S. Open tennis championships September CBS, week 1 1976, 82, 85-87, 89-90, 99 and again 20012014; week 2 1979-81, 83-84, 88, 91-93, 98, 00, or Major League Baseball playoffs in October NBC, typically during League Championship Series from 1976 to 1989, and again in 1996 and 1997, World Series 1978 to 1984, when Sunday games were afternoon games, and CBS, League Championship Series, 1990 to 1993. During these weeks, the restricted conferences teams in the Mountain and Pacific time zones could not play at home during the weekend in question, unless they either hosted an interconference game, or were scheduled in prime time regardless of opponent. The rule was effectively eliminated by the new cross-flex rule in 2014, meaning the NFL could apply the new rule and assign games that would be on the restricted network to the other network. In 