Jadon Sancho has started the last couple of games on the left, with Marcus Rashford on the right, and some fans have pointed out that both can be equally effective in the opposite roles.
Anthony Elanga is also able to perform on both flanks and the modern tendency has been for wide forwards to be able to cut inside onto their favoured foot, rather than hugging the touchline and going past their marker. This task often falls upon the full-back to provide an overlap and extra width, as was the case when Luke Shaw got to the byline to cross for Paul Pogba's goal at Burnley.