Rovers had to settle for a point in an impressive performance at table-topping Peterborough United.
John Marquis fired Rovers into a first-half lead, but the home side pegged them back through a Ryan Tafazolli header in the second period.
Rovers crafted a number of chances to clinch the match, but saw a Tom Anderson header disallowed and a Mallik Wilks effort come back off the inside of a post.
Rovers are back in action at the Keepmoat Stadium when Newcastle United U21 visit in the Checkatrade Trophy on Tuesday September 4. Book your place now at tickets.clubdoncaster.co.uk.