Coolderry, Shinrone, St.Rynaghs and Kilcormac-Killoughey remain in the hunt.
With the last four bracket set, the details have been announced for the fixtures on Saturday week.
Fresh from their triumph over Seir Kieran on the final day of the group phase, Coolderry take on a Shinrone side who secured their passage to this stage with a decisive 20-point victory over Kinnitty.
Shinrone will be looking to advance to a first final since 1960 in the tie against 2018 champions and the faithful's most successful senior club hurling side Coolderry.
They'll lock horns in Birr at 2:30 on November 6th.
St.Rynaghs place atop the group stage was secure ahead of their final day defeat against old rivals Birr.
FULL TIME : @MolloyPrecast Senior Hurling Championship Round 5@BirrCLG 1-23@strynaghs 0-13@BallinamereGAA 2-15@belmont_gaa 1-18@coolderrygaa 0-20@SeirKieran_GAA 1-15@ShinroneGaa 4-19@KinnittyGaa 0-11@KK_GAA 2-24@Drumcullen_GAA 0-10
— Official Offaly GAA (@Offaly_GAA) October 24, 2021
A 13-point defeat will do little to quell their ambitions for a third title in succession in Offaly.
The semi-final will be a repeat of the 2020 final against Kilcormac-Killoughey, which Rynagh's won by six points on the day.
KK pulled no punches in their 20-point demolition of Drumcullen in the final round robin contest and will be hopeful if not quietly confident of another close contest against the 19-times champions.
That one has been fixed for 2:30pm in O'Connor Park on November 6th also.
Fixtures - Offaly Senior Hurling Championship Semi-Finals:
Saturday November 6th
- Coolderry v Shinronr - 2:30pm - Birr
- St. Rynaghs v Kilcormac-Killoughey - 2:30pm - O' Connor Park
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