Update: As of this afternoon, What Happens in Vegas beat out Speed Racer for the No. 2 spot [1] at the box office, Variety reports.

It will come as no surprise to the majority of movie critics [2] who screened Speed Racer [3] that the highly anticipated Wachowski brothers' flick had a disappointing opening weekend.

Not only did Speed Racer fail to knock Iron Man [4] out of the top spot (the Marvel action hero brought in another $50 million over the weekend), but it's still unclear if the film can truly claim second place as What Happens in Vegas [5] is hot on its trail in what Variety is calling a "photo finish." [6] Vegas only earned an estimated $200,000 less than Speed Racer and both films are currently hovering around the $20 million mark [7].

In addition to poor reviews, another problem Speed Racer had is that it seemed to only appeal to kids, and filmmakers were shooting for a broader audience. An executive for the film told Hollywood Reporter, "What's hurting us is that the picture is playing very young." The Hollywood Reporter article also points out [8] that if this is the case, then they'll have a hard time when even more competition heads to the theaters next weekend in the form of The Chronicles of Narnia: Prince Caspian [9].

Made of Honor [10] fell to fourth place followed by Baby Mama [11] to round out the top five.

Photos courtesy of Paramount Pictures [12]