The very first
Sin Piedad event produced under that name took place on December 15, 2000 in
Arena México, in
Mexico City, replacing their regularly produced Friday night
CMLL Super Viernes ("Super Friday") show. The 11 shows has hosted 66 matches so far, six on each except for the
2003 show which only had 5 and the
2008 show which had 7 matches. Twelve of the thirteen shows have featured one or more
Lucha de Apuestas, or bet matches, the most prestigious match form in
lucha libre. Only the
2012 event did not feature a
Luchas de Apuesta match at all and the
2008 Sin Piedad was the only other show to not have a
Luchas de Apuestas in the main event, but had one in the semi-main event instead. There has been a total of 16
Luchas de Apuestas matches in Sin Piedad history, with several shows having two such matches. In total three wrestlers lost their masks as a result of a Sin Piedad match;
Pequeño Black Warrior,
Mictlán and
Ángel Azteca. Sixteen wrestlers in thirteen matches, three tag team matches and eight individual matches, have had their hair shaved off as a result of their
Sin Piedad matches;
El Felino,
Mr. Águila,
La Amapola,
Black Warrior,
Rey Bucanero (twice),
Kenzo Suzuki,
Marco Corleone,
Pierroth (twice),
Vampiro Canadiense,
Brazo de Plata,
Emilio Charles Jr.,
Cien Caras,
Super Parka and
Máscara Año 2000. Sin Piedad has hosted six championship matches, with three championship changes and three successful defenses. There have been two tournament finals held. first in
2003 the final for a tournament to determine the next holders of the
Mexican National Trios Championship. in 2012 the main event of the show was the finals of the 2012
La Copa Junior Tournament Final. ==Dates, venues, and main events==