Leeds United’s preparations for the 2018-19 campaign continued with a 4-3 defeat to League One outfit Oxford United on Tuesday night.A number of youngsters have been given the chance to impress during pre-season, and Sam Dalby is one of those to have made an impact.Jamie Shackleton also falls into that category, with the 18-year-old putting in a fine performance against Oxford.Shackleton is a midfielder by trade, but played right-back on Tuesday night, and put in the type of performance that suggests that he is ready for some first-team action.[brid autoplay=”true” video=”257599″ player=”12034″ title=”Watch Leeds’ opening fixtures for the 201819 Championship season”]The teenager showed his excellent ability in forward positions, and the Leeds supporters were delighted with what they saw from him against Oxford.It has been a frustrating transfer window for Leeds, but head coach Marcelo Bielsa has a number of talented youngsters that he should be playing in the coming season.A selection of the Twitter reaction from the Leeds fans can be seen below: