Guerin first played hurling in his local area with the Newmarket-on-Fergus club.
He was part of the Newmarket team that succeeded in winning their very first Clare SHC title in 1912.
He claimed a second winners' medal in 1916, before transferring to the newly-established Ballycar club.
[1] Guerin's performances at club level quickly earned him a call-up to the Clare senior hurling team.
After missing Clare's successful Munster SHC campaign in 1914, he was a late addition to the team for the subsequent 1914 All-Ireland final against Laois.