Crusaders score six in clean sheet victory over Carrick Rangers
Linfield were held 2-2 by Ballymena
Linfield took the lead through Mark Stafford, before McMurray levelled for Ballymena.
Andrew Waterworth then made it 2-1 to the Blues.
Substitute Joe McKinney equalized for United, who then missed a penalty through Kevin Braniff.
Irish Premiership leaders Crusaders beat Carrick Rangers 6-0
The goals were scored by Jamie Glackin, Mark McCrystal, Billy Joe Burns, Paul Heatley, Matthew Snoddy and Jordan Forsythe.
Dungannon Swifts beat Ards 1-0
Paul McElroy scored what proved to be the only goal of the game.
Coleraine kept up the pressure with a 2-0 victory at Glentoran
Eoin Bradley scored after 24 seconds, with Ciaron Harkin adding a late penalty.