Season 1
10 episodes
May 30, 2005 - August 1, 2005
Season 2
10 episodes
June 12, 2006 - August 14, 2006
Season 3
11 episodes
June 4, 2007 - August 13, 2007
Season 4
15 episodes
April 1, 2008 - July 8, 2008
Season 5
15 episodes
January 29, 2009 - May 14, 2009
Season 6
15 episodes
July 21, 2009 - October 13, 2009
Season 7
15 episodes
June 1, 2010 - August 10, 2010
Season 8
15 episodes
September 22, 2010 - December 15, 2010
Season 9
16 episodes
July 18, 2011 - September 19, 2011
Season 10
20 episodes
June 4, 2012 - September 10, 2012
Season 11
22 episodes
March 12, 2013 - July 25, 2013
Season 12
20 episodes
March 13, 2014 - July 24, 2014
Season 13
16 episodes
September 10, 2014 - December 17, 2014
Season 14
16 episodes
March 3, 2015 - June 9, 2015
Season 15
16 episodes
January 15, 2016 - April 29, 2016
Season 16
16 episodes
September 23, 2016 - February 2, 2017
Season 17
16 episodes
September 29, 2017 - February 2, 2018
Season 18: Rookies vs. Veterans
16 episodes
September 28, 2018 - February 8, 2019
Season 19
16 episodes
January 7, 2021 - April 22, 2021
Season 20: Young Guns
16 episodes
May 31, 2021 - September 13, 2021
Season 21: Battle of the Ages
16 episodes
September 29, 2022 - February 9, 2023
Season 22
16 episodes
September 28, 2023 - January 25, 2024
