Miers played junior football for St Mary's[1] and Grovedale before representing the Geelong Falcons in the TAC Cup.

[2] In their victorious 2017 season, he kicked a league-high 50 goals, including a haul of seven in the grand final against the Sandringham Dragons, when he was named best on ground.

[3] Miers' agility, pressure and crumbing ability were strengths in his junior career,[4] but his kicking was identified as a deficiency.

He was nominated for the AFL Rising Star award in round 8, after amassing 22 possessions and kicking one goal against North Melbourne; up to that point he had played every match.

[7] An analysis by AFL.com.au reporter Callum Twomey identified him as a "key factor in the Cats' place atop the ladder", along with fellow recruit Luke Dahlhaus.