MMA Junkie Radio kicks off tonight at 8 p.m. ET (5 p.m. PT) with special guest Shannon Knapp . Knapp is the founder and president of the pioneer Invicta FC promotion. She’ll talk about Friday night’s Invicta FC: Phoenix Rising Series 1 card, which features a one-night strawweight tournament, which will determine a new champion. In addition, the hosts will go over all the latest news in the MMA world, including whether we think Brock Lesnar is really retired