Galway,Fermanagh last year and Monaghan,Cavan this year either beat or were competitive against Mayo in MacHale park because all have been playing a defensive system for years while Sligo have no system,shape or structure to their defence.
Current odds Mayo (1/14). Draw (18/1). Sligo (15/2).
Last Machale park championship meeting 2008 Mayo 3-11 Sligo 0-7. A Moran,K Higgins,C Boyle,D Clarke,T Parsons,C Harrsion,R Dovanan,D Kelly,M Breheny all started that game and will all likely feature again on May 21st.