Toby and Kate Might Not Be Together Anymore
Not only does Toby arrive solo at Kevin's house, but he also isn't wearing a wedding ring. As he tells Randall that he brought the sidewalk chalk, he says that he just talked to his son Jack, and "they're on their way." Assuming that he's talking about Kate, it might mean they live separately now. Randall then tells Toby, "I'm glad you decided to come." Hmm, why wouldn't he come to support his wife? Unless, of course, they've been divorced for a while now.