Presnel Kimpembe accepted the Paris Saint-Germain players had to take the blame for their 2-1 Champions League defeat to Borussia Dortmund as Thomas Tuchel's tactics were not at fault.
Tuchel switched to a three-man defence, with Marquinhos lining up alongside Kimpembe and captain Thiago Silva at the back to grant Thomas Meunier and Layvin Kurzawa greater license to attack.
The move did not appear to pay off as PSG were outplayed by Dortmund and suffered a last-16 first-leg defeat following Erling Haaland's brace, although Neymar netted a potentially precious away goal.