Possible hamstring injury for striker Coventry City's controversial striker Marlon King started his first game for his new club last night. The 30 made his club debut on Saturday as a second half substitute and received a warm welcome from the home fans. As last night's game progressed, it became clear that King is lacking match fitness, which isn't too surprising as he has not played competitive football for about a year and has spent nine months of it in prison. King managed to prove he still has plenty of ability during his short spell on the field on Saturday and it was enough to convince manager Aidy Boothroyd to pick him ahead of Lukas Jutkiewicz. King had a reasonably good game and made significant contributions all round and had a good effort well saved by Sullivan in the Doncaster goal, who tipped the ball over the bar for a City corner. City went into the half time break at 1-1 having conceded an equalising goal late on to Gunnarsson's 90th second opener, his third goal of the season. Unfortunately for King and for Coventry City, King puled up with what appeared to be a hamstring problem the 63rd minute and limped off to be replaced by Lukas Jutkiewicz. City were outplayed for long periods of the game by an efficient Doncaster side well managed by Sean O'Driscoll, but they managed to grab an 86th minute winner from a diving header by Coventry born Gary McSheffrey to take the three points. If King does have a hamstring injury, depending on the severity, he could be out for a couple of weeks or a couple of months.