Sin Piedad 2007 (Spanish for "Without pity") was a professional wrestlingPay-Per-View (PPV) produced by Consejo Mundial de Lucha Libre (CMLL), which took place on December 7, 2007 in Arena México, Mexico City, Mexico.The main event of Sin Piedad was originally supposed to be a tag teamLucha de Apuesta, hair vs. hair match between the teams of Shocker and Rey Bucanero and Black Warrior teaming with Lizmark, Jr. but in the week before the show the partners were switched around to a relevos increíbles match where a Tecnico ("fan favorite") teams up with a "villain" so that Shocker teamed with Lizmark, Jr. and Rey Bucanero teamed with Black Warrior. The teams quicly split the first two falls of the match between them in under four minutes, while the final fall went almost 11 minutes before Shocker forced Black Warrior to submit and Lizmark, Jr. pinned Rey Bucanero to win the match. Following the match Rey Bucanero and Black Warrior were both shaved bald.
The undercard featured a very intense singles match between LA Park and Perro Aguayo, Jr. that had begun when LA Park returned to CMLL some months earlier and involved Aguayo, Jr.'s group Los Perros del Mal. Los Perros ended up costing their leader the match as they attacked LA Park during the third and final match, causing a disqualification. The featured four additional matches, all Six-man "Lucha Libre rules" tag team matches with no major storyline build to it.
The event featured five professional wrestling matches with different wrestlers involved in pre-existing scripted feuds or storylines. Wrestlers portray either villains (referred to as Rudos in Mexico) or fan favorites (Técnicos in Mexico) as they compete in wrestling matches with pre-determined outcomes.
Numbers in parentheses indicate the length of the match.
(c) refers to the champion(s) heading into the match.