David Clarkson emerged first for Maple Leafs practice Thursday wearing a third-line red jersey. Clarkson practised at right wing with centre Dave Bolland and left-winger Mason Raymond. Clarkson whose 10-game suspension is over will make his long-awaited debut Friday night against the Columbus Blue Jackets. The rest of the lines remained mainly intact with Clarkson simply taking the place of the demoted Josh Leivo.