Do you need a ticket for a 2 year old sacramento kings

No

According to the website, "In general, children under two years of age are admitted free of charge into Golden 1 Center for live events provided that they sit on an adult's lap. Please note that some events may have varying age requirements. Please see specific show guidelines for more information." It says UNDER two, but in my experience, that is sometimes interpreted as two and under, so I would recommend calling and speaking to someone in person. Bear in mind that the child has to sit on someone's lap.