Matt Brown replaces Matt Riddle at UFC on FX 4 against Luis Ramos

Ultimate Fighting Championship (UFC) welterweight Matt Brown will lace up the gloves and take on Luis Ramos at the UFC on FX 4 event, currently booked for the Revel Hotel and Casino in Atlantic City, NJ, on Fri., June 22, 2012.

"The Immortal" one, who earlier today tweeted the change in line-up, replaces Matt Riddle, who is no longer competing in "Dirty Jersey" following an injury.

Brown (14-11) recently rained on the parade of Stephen Thompson at UFC 145, knocking "Wonderboy" around for three rounds and snapping his undefeated streak. Ramos (19-7) saw his three-fight winning streak come to an end at the hands of Erick Silva on the UFC 142 card back in January.

UFC on FX 4 will feature a lightweight showdown between Gray Maynard vs. Clay Guida in the main event of the evening. It will also mark the welterweight debut of Dan Miller, who takes on Ricardo Funch in main card action, among other bouts.

For the latest UFC on FX 4 news and notes be sure to hit up our complete event archive right here. To check out the latest "Maynard vs. Guida" fight card and rumors click here.