Collingwood are on the slide again after losing the last two games and need to bounce back against Geelong on Friday night.

Geelong veteran Gary Ablett says his hamstring strain is nothing more than a standard part of hard pre-season training.

Gary Ablett had enjoyed a solid pre-season until a hamstring strain at training last Thursday.

While Patrick Dangerfield kept to light duties, Gary Ablett impressed at a lengthy Geelong training session.

Injury-prone Geelong midfielder Scott Selwood has suffered a setback ahead of the AFL season, undergoing ankle surgery on Monday.