Career
He was a defender. Seagraves began his playing career with Liverpool. He made two appearances for the club, both in cup matches. His debut came in the first leg of the 1985-1986 League Cup semi-finals, against Queen"s Park Rangers, when he deputised for the injured Gary Gillespie.
He spent a short spell on loan at Norwich City F.C. during the 1986-1987 season and made three appearances for The Canaries.
Early in the 1987-1988 season, Mel Machin signed Seagraves for Manchester City, then in the Second Division, for a transfer fee of £100,000. He made his debut the following Saturday, when he came on as a substitute for Paul Lake in a 2–0 home defeat at the hands of Leeds United.
He made 14 starts in the 1987-1988 season, mostly deputising for Kenny Clements. He was the first-choice right back in the first half of the 1988-1989 season, in which City gained promotion to the First Division, but his season was ended in February by a cracked vertebra.
His first team opportunities were limited the following season.
A brief opportunity arrived after Machin was sacked in November 1989, but Seagraves made just two appearances before new manager Howard Kendall brought in Alan Harper as a new right-back. His final Manchester City appearance came on 9 December 1989 against Southampton. In September 1990 he was transferred to Bolton Wanderers for £100,000.
Whilst at Bolton Seagraves played in the 1995 Football League Cup Final.
Seagraves went on to play for Swindon Town before moving into non-league football. He was appointed to his coaching position at Wigan in the summer of 2006.
His manager at Wigan – Paul Jewell – was a team-mate of Seagraves in the Liverpool Football Club youth team In November 2007 he left Wigan to join Jewell at his new club Derby County.
On Monday 29 December 2008, Seagraves left his position as coach at Derby County after the resignation of Paul Jewell.
He linked up with Jewell for a fourth time when agreeing to become a scout for Ipswich Town in November 2011. In May 2013 Seagraves began working in Delhi India, for a company called "India On Track" in conjunction with Arsenal Soccer Schools. He is working to create a structure within the Soccer Schools that will be sustainable and will ensure the future development of football and football players within India.
Motivated with the ambition to provide the Indian youth with a truly professional and modern training curriculum, Mark announced his own venture, The Football Faktory (a Trade Mark of MAS Football Academy Pvt Limited)in July, 2014, in New Delhi.
Training is structured to provide a sustainable routine that provides a balance between technical, health, fitness and social skills. Following the successful launch of The Football Faktory in September 2014, The Football Faktory has a center in Surat, Gujarat and is currently in the process of setting up a second center in Sangolda Goa having already set one up in Don Bosco School Panjim Goa.