Tony Mowbray has resigned as manager of League One strugglers Coventry City.
Mowbray, 52, parts company with the Sky Blues following a start to the season that has seen them sink to the foot of the table with six points and no wins from their opening 10 games.
Coventry announced the news on their official website and said technical director Mark Venus would take charge of the team against Port Vale on Saturday.
"Coventry City can today confirm that Tony Mowbray has resigned as manager of the football club,'' a statement said.
"Without a win in the first 10 league games, Tony felt on a professional level that he was no longer able to take the club forward.
"Coventry City FC would like to thank Tony for all his energy and dedication over the past 18 months.
"We would also like to wish Tony all the very best for the future and put on record that he will always be welcome at the football club.
"Mark Venus will take responsibility of first-team duties with immediate effect.''
Former Hibernian, West Bromwich Albion, Celtic and Middlesbrough boss Mowbray took charge in March 2015 and leaves with an overall record of 26 wins, 26 defeats and 24 draws from his 76 matches.