Former Cat Rajon Rondo is one of the 10 most underpaid athletes in pro sports

Rajon Rondo’s salary:  $2,623,326 — The engine that fuels the mighty, aging Celtics is the 22-year guard who played his college ball at Kentucky. Rondo is in year three of a four-year deal and is slated to get paid less in 2009-2010 than most backups. Boston has until Halloween to extend Rondo’s contract, so it’s quite possible that Rondo will go from underpaid to well-paid by the end of the month.  See the rest of the list here.