The USL First Division (usually referred to as USL-1) was a professional men's soccer league in the United States and Canada from 2005 to 2010. During its existence, it formed the second tier of soccer in the United States soccer league system behind Major League Soccer. It was operated by United Soccer Leagues (USL) and was known as the A-League, from 1997 until 2004. Several teams left the league in 2009 to form the new North American Soccer League, with the intent of running their own second-tier league. Following a brief legal dispute, the two leagues operated in tandem under United States Soccer Federation (USSF) mediation as the USSF Division 2 Professional League in 2010 before the split became final. The teams that remained in the First Division were merged with the USL Second Division in 2011 to form USL Pro. History When the A-League became the USL First Division in 2005, the league comprised 12 teams: Atlanta Silverbacks, Charleston Battery, Minnesota Thunder, Montreal Impact, Portland Timbers, Puerto Rico Islanders, Richmond Kickers, Rochester Raging Rhinos, Seattle Sounders, Toronto Lynx, Vancouver Whitecaps, and Virginia Beach Mariners. The Calgary Mustangs, Edmonton Aviators, and Syracuse Salty Dogs, all of whom competed in the final A-League season in 2004, folded during the offseason, and did not take up their places in the new league. The Seattle Sounders won the inaugural USL1 championship, beating Richard on penalty kicks in the championship game after a 1–1 tie in regulation time. The Vancouver Whitecaps won the first of their two USL1 titles in 2006 by beating the Rochester Raging Rhinos 3–0 in the championship game, while Seattle won their second title in 2007 by overcoming the Atlanta Silverbacks in a one-sided 4–0 final. Vancouver won their second USL1 championship in 2008 by beating the Puerto Rico Islanders 2–1 in the first USL1 final to feature no American teams; the championship went north of the border again in 2009 when Montreal Impact won their first USL1 title, beating Vancouver 6–3 on aggregate over two legs in the first all-Canadian affair. On August 27, 2009, Nike agreed to sell its stake in the United Soccer Leagues (USL) to Rob Hoskins and Alec Papadakis of Atlanta-based NuRock Soccer Holdings, instead of to the USL Team Owner's Association (TOA), a group comprising the owners of several USL First Division clubs. In the months that followed, several prominent TOA members began to