It's a 6pm start at The Sportsground this evening.
Birr's Shane Delahunt will make his 100th appearance for Connacht tonight.
So far in 2021 he's made 21 appearances, totaling 1,000 minutes and scored three tries, made 137 metres and accounted for 122 tackles.
The hooker is joined in the pack by Athlone's Niall Murray and Portlaoise's Eoghan Masterson for the Westerners game against The Ospreys.
Their underway at The Sportsground from 6pm.