Coventry moved up a place to sixth in League Two thanks to a comfortable 3-1 win against 10-man Stevenage.Mark Robins' men remain firmly on track to secure a play-off place thanks to two early goals from Marc McNulty and a Liam Kelly strike.Stevenage responded through Alex Revell at 2-0 down - all four goals came in the opening 37 minutes - but Luke Wilkinson's dismissal just before half-time gave them too big of a mountain to climb.It took the hosts just two minutes to go ahead, with Jonson Clarke-Harris teeing up McNulty for a 30-yard shot that too hot for goalkeeper Tom King to handle.Four minutes later it was 2-0 as McNulty tapped home his 20th league goal of the season after meeting Jordan Willis' knock-down.Stevenage halved the deficit in the 20th minute when Revell pounced on a defensive mix-up before lashing home.The Sky Blues' two-goal advantage was restored in the 37th minute when Kelly drove home from outside the box following Jordan Shipley's lay-off.Stevenage's hopes of getting anything out of the game then suffered another significan blow when Wilkinson was shown a straight red card following a crude challenge on McNulty.Kelly volleyed against the crossbar as Coventry sought to increase their lead but Revell almost made it 3-2 with 20 minutes left when he fired narrowly wide.City substitute Josh Barrett fired over the top late on but the points had already been secured.