Managerless Coventry City ended their 10-game winless run as they ran out 2-0 winners against Port Vale.Marvin Sordell and Chris McCann both fired home after the hosts gifted possession to the Sky Blues who, just days after Tony Mowbray's resignation, became the first team to take any points from Vale Park this season.The visitors took the lead after 36 minutes when experienced midfielder Michael Brown lost possession to Gael Bigirimana, who charged into the box and pulled the ball back to Sordell who smashed home from close range.City doubled their tally after 72 minutes when Paulo Tavares was robbed of the ball in midfield by Daniel Agyei, who found McCann in the box to fire into the roof of the net.Just six minutes earlier, the away side almost capitalised on another Vale mistake - one of many throughout the game - when Jak Alnwick presented the ball to Agyei from a roll out, but the keeper redeemed himself by tipping the subsequent shot wide.