He was the owner of the UFC until he sold it to Zuffa in 2001. He is also the creator of the radio program the King Biscuit Flower Hour. In the late 1980s he started Semaphore Entertainment Group (SEG), which was one of the first groups to develop content for Pay Per View. In 1999, Meyrowitz created Eyada.com, the first internet radio station.
In January 2008, Meyrowitz announced the formation of his new MMA company, YAMMA Pit Fighting. YAMMA was a joint venture between Meyrowitz's company, Rope Partners, and Live Nation. Yamma folded the same year, holding only one event on April 11, 2008.
- "Bob Meyrowitz recalls the remarkable genesis of the first Ultimate Fighting Championship event". MMA Fighting. Retrieved 29 November 2014.
- "THE MEDIA BUSINESS: Television; Pay-Per-View Scales Back Ambitions for 'Event' Shows". Nytimes.com. 24 May 1993. Retrieved 29 November 2014.
- Matthew G. Miller (1 August 2012). "Fertittas Made Billionaires by Head Blows With Chokeholds". Bloomberg. Retrieved 29 November 2014.
- "MMA Stomping Grounds: Former UFC owner starts new MMA promotion - Mixed martial arts: UFC news, analysis, opinions". Weblogs.baltimoresun.com. Retrieved 29 November 2014.
- "Yamma Pit Fighting Emerges as New Force on the MMA Scene". Businesswire.com. Retrieved 29 November 2014.