Aiden Scully, Daragh Scully, and Stephen Quirke led the scoring for the 20 times champions.
St Rynagh's got back to winning ways in the Offaly Senior Hurling Championship over the weekend.
The three-time champions of 2019, 20, and 21 were too good for Tullamore, winning on a final scoreline 0-27 to 1-15.
That result leaves Tullamore bottom of group two after their opening day loss to Kilcormac-Killoughey.
Despite losing heavily to KK last time out, St Ryangh's now sit second in the standings after picking up their second victory of the campaign.
They face a winless Seir Kieran next time out in just under two weeks, while Tullamore will play Coolderry on the same weekend.
Our coverage of the Offaly Senior Hurling Championship is with thanks to Leahy Midland Auctioneers.
If you're thinking of buying or selling a property in Laois, Offaly or Westmeath, then get in touch with Your local auctioneer John Leahy, the experts located in the midlands - Contact John Leahy Midland Auctioneers or visit leahyauctioneers.ie
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