They left a small gap between 2009 and 2010 number series. However there's a lot of numbers at the low end of 2009 that weren't used, and could be used at a later date for team splits, etc.
- Teams #1-#208 were rookies in or before 1998 (this is due to FIRST giving teams new numbers every year previously).
- Teams #209-#335 were rookies in 1999.
- Teams #336-#491 were rookies in 2000.
- Teams #492-#716 were rookies in 2001.
- Teams #717-#999 were rookies in 2002
- Teams #1000-#1238 were rookies in 2003.
- Teams #1239-#1497 were rookies in 2004.
- Teams #1498-#1709 were rookies in 2005.
- Teams #1710-#1980 were rookies in 2006.
- Teams #1981-#2287 were rookies in 2007.
- Teams #2330-#2681 were rookies in 2008.
- Teams #2702-#3122 were rookies in 2009 (no even numbers between 2702 and 2826).
- Teams #3130-xxxx were rookies in 2010.