UPDATE: This is a failing grade for the 20th Century Fox film starring Tom Cruise and Cameron Diaz on the first day of what will be its 5-day opening weekend. According to rival studios, a figure of $5+M would have been hopeful. But Fox announced just now that Knight and Day did only a nervous $3.8M. (Rival studios had it at $3.6M this morning “apparently not knowing that there was a data feed problem with one of the big circuits”, Fox tells me.) “It’s normally 5-times Wednesday for 5 days, but that’s a number below even the most evil estimates,” one rival studio exec emails me.