A clever goal from Colin Robinson gave the young Blades a 25th-minute lead, but with 12 minutes remaining Tony Evans powered home a header onto Chris Booths's cross to level the match.
Ollerton have always been seen as likely candidates for a push for the top ever since they joined the Central Midlands League, but they have never quite got there.
But this season they will be a team for opponents to take lightly at their peril, and have added former Glapwell midfielder Steve Watson to what already looks a formidable squad.