[2] He joined Motherwell in 1999 from Paisley side Gleniffer Thistle, but had to wait 18 months to make his first team debut.

[6] He made 24 league appearances in the Championship during the 2004–05 campaign, but lost his place in the team the following season and was loaned out to Blackpool in February 2006.

[4][7] Having been released by Argyle later that year, Lasley spent time training with Kilmarnock before deciding to rejoin Motherwell.

[9] He returned to make 32 league appearances the following season, scoring one goal, and signed a two-year contract extension in April 2008.

[21] On 21 June 2017, Motherwell announced that Lasley had retired from the game and taken up the vacant Assistant Manager role at the club.