Thomas Tuchel has taken responsibility for asking centre-back Andreas Christensen to deal with Vinicius Junior in Chelsea's 3-1 defeat by Real Madrid.
The Brazilian ran the Danish defender ragged, exploiting the space between him and Blues wing-back Reece James in the first half at Stamford Bridge to devastating effect by setting up the first goal of Karim Benzema's stunning hat-trick.
The 25-year-old Denmark international's torrid evening was ended when he was replaced at half-time by midfielder Mateo Kovacic, while England star James was instructed to play deeper in the second half to negate the threat posed by Vinicius.