Pep Guardiola’s side were overpowered by their city rivals at the Etihad Stadium, which ended their 28-match unbeaten run in all competitionsRiyad Mahrez has expressed his disappointment after Manchester City suffered a 2-0 defeat against Manchester United in Sunday�s Premier League match. Goals from Bruno Fernandes and Luke Shaw in each half handed City their first loss since November 21 when Tottenham Hotspur beat them 2-0.The result also ended their impressive winning run of 21 games across all competitions.