WITH 15% Home advantage, I get this. X.X I don't have a problem with having no illegal formations, but if you state that certain formations are illegal, people will tend to expect to see repercussions.

Some combination of at least 3 defenders (i.e. 3 players anywhere in the back row [DL, DC, DR] )
At least 1, but no more than 2, players on EACH outside flank. {the DL/DR, DML/DMR, ML/MR, AML/AMR slots}

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No manual substitutions were used (Injured MC off for fit MC)