The official weigh in event for UFC 155: "Dos Santos vs. Velasquez 2" went down earlier this evening (Dec. 28, 2012) from the MGM Grand in Las Vegas, Nevada.

For complete UFC 155 weigh in results and live blog click here.

UFC 155 will feature a colossal heavyweight rematch between division kingpin Junior dos Santos, defending his world title against the man he defeated to win it, Cain Velasquez, in the main event of the evening. In the co-featured fight of the night, two men who are about 100 pounds lighter -- Jim Miller vs. Joe Lauzon -- will collide in an important Lightweight showdown.

Remember, too, that MMAmania.com will provide LIVE round-by-round, blow-by-blow coverage of the UFC 155 main card action on fight night (Sat., Dec. 29, 2012), which is slated to air at 10 p.m. ET on pay-per-view (PPV). The latest quick updates of the live action will begin to flow earlier than that around 6:30 p.m. ET with the "Prelims" bouts on Facebook and FX Channel.

For all the latest "Dos Santos vs. Velasquez 2" news and notes click here.