Ireland prop Finlay Bealham's fine season will be put under the microscope when the holders come to the City of the Tribes this afternoon.
The Australian has undergone a real transformation in body shape to become a force to be reckoned with as one of two Ireland international tight-heads at Connacht.
They will lean on him like never before as coach Pat Lam plots an upset over Glasgow.
"Going into play-off rugby, we couldn't ask for a better challenge than playing the defending champions who are on fire," said Lam. "Glasgow are undefeated since February and they have threats all over the park.
"The key now is raising all our standards and team work to yet another level over the next few weeks."
Full-back Tiernan O'Halloran and scrum-half Kieran Marmion will reach the 100-cap milestone as Bundee Aki and Matt Healy are restored to the starting blocks.
For their part, Glasgow will come fully locked and loaded with the confidence of winning nine straight and building a PRO12 aura Leinster once enjoyed back in their prime.
Connacht: T O'Halloran; N Adeolokun, R Henshaw, B Aki, M Healy; AJ McGinty, K Marmion; R Loughney, T McCartney, F Bealham, U Dillane, A Muldowney, S O'Brien, J Heenan, J Muldoon (capt).
Glasgow: S Hogg; T Seymour, A Dunbar, P Horne, L Jones; F Russell, A Pric; G Reid, F Brown, S Puafisi, L Nakarawa, J Gray (capt), R Harley, R Wilson, J Strauss.
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