Isaac Smith's days at Hawthorn could be numbered.

Hawthorn speedster Isaac Smith has signed a two-year contract extension with the Hawks, keeping him at the club until the end of the 2020 season.

Smith was contracted until the end of 2018, however, the Hawks opted to lock away the midfielder for a further two seasons.

The 27-year-old has played 135 games for the Hawks, is currently a member of the club’s leadership group and is a three-time premiership player.