AF2 (styled as af2 and short for arenafootball2) was the name of the Arena Football League's developmental league; it was founded in 1999 and played its first season in 2000. Like parent AFL, the AF2 played using the same arena football rules and style of play. League seasons ran from April through July with the postseason and ArenaCup championship in August. The AF2 continued to operate while the AFL had suspended operations. The league was effectively disbanded in September 2009 when no team committed to playing in 2010.

Like most other minor sports leagues, the AF2 existed to develop football players and also to help players adapt to the style and pace of arena football. In addition, the AF2 was similar to other minor leagues because AF2 teams played in smaller cities and smaller venues. While the AFL was played in cities like Los Angeles, New York City, Philadelphia, Dallas, and Chicago, the AF2 fielded teams in cities which are part of metropolitan statistical areas ranging in size from Milwaukee (with 1,739,497 residents) to Albany, Georgia (with 164,000 residents). Players also earned less in the AF2, with each player making $200 per game.

Paul Brandon Gilbert (born November 6, 1966 in Illinois, USA) is an American guitarist. He is well known for his technical guitar work with Racer X and Mr. Big, as well as many solo albums and numerous collaborations and guest appearances with other musicians.

He has been voted number 4 on a list in GuitarOne magazine of the "Top 10 Greatest Guitar Shredders of All Time", as well as a spot in Guitar World's 50 Fastest Guitarists of All Time list.

Gilbert was raised in Greensburg, Pennsylvania. Around 1981-82, he first contacted Mike Varney, founder of Shrapnel Records, asking for a gig with Ozzy Osbourne. At the time, Varney couldn't think why Osbourne would want a 15 year old guitarist, but after listening to his demo he changed his mind. Gilbert was featured in Guitar Player magazine at the age of fifteen. They talked for the next 3 years, until Paul went to L.A. for the GIT (Guitar Institute of Technology), and then was ready to record Racer X's debut album Street Lethal.