No one likes to hear UFC injury news, especially with the rash of fight changes over the last few months, but UFC on Fox 5 has taken a hit. It appears that Eddie Yagin may be out of his featherweight bout with Dennis Siver. According to his management, Yagin had to go to the ER due to a head injury, and it might be serious. Here's the tweet from Jason House of Iridium Sports Agency:

Please keep @eddieyaginmma in your prayers. He got admitted to the ER today due to a head injury he suffered training. — Jason House (@IridiumSports) November 13, 2012

He followed that up with a tweet this morning saying that Eddie's doing better, but will be in the hospital for a couple of days. An interview with MMA Weekly provided more clarity:

The problem started on Saturday after a usual day of training, Yagin’s manager, Jason House, told MMA Weekly on Tuesday. “He came home after practice, had a headache, started to vomit whatever liquids he drank and then decided to go to the ER the next day,” said House, adding that nothing out of the ordinary had occurred in training. Yagin hadn’t been knocked out or suffered from any particularly hard blows or anything of the sort. Yagin’s family told House that there is blood around his brain that is causing swelling, thus, putting pressure on his brain, but they were told by his doctor that he believes surgery won’t be necessary, that the swelling should go down on its own in the coming days.

With his bout with Siver just 25 days away, a multi-day hospital stay for a head injury means that he has been forced out. Siver and Yagin were supposed to meet at UFC 151, but the bout was moved to December when that card was cancelled. The 33-year-old Hawaiian (16-5-1) is coming off the biggest win of his career, a split decision over Mark Hominick at UFC 145 in April. Hopefully it's nothing too serious and he's able to get back at it as soon as possible.