United's flexibility serving them well in top-four race

(Reuters) - Manchester United's tactical flexibility continued to serve them well as they extended their unbeaten Premier League run to 15 games with a 3-0 win at Leicester City on Sunday to ramp up the pressure on their rivals for a top-four finish. Arsenal and Liverpool have faltered in recent weeks to slip out of title contention behind runaway leaders Chelsea but United have found some momentum and now trail the fourth-placed Gunners by two points and the Reds, who are fifth, by one. After a