Sprinting Dive Roll
From WikiRaider
The Sprinting Dive Roll (also Low Dive Roll or Running Dive Roll) can be performed since Tomb Raider III. It should not be confused with the Swan Dive (or High Dive Roll).
While Sprinting press the Jump Button to make a Dive Roll.
This move gets essential when there are timed doors through which Lara has to dive or similar obstacles.
Since The Last Revelation (TR4) Lara can even perform a Dive Roll to Crouching Position (press the Crouch Button instead). Lara would then end up crouching after the roll, making it easier to get into crawlspaces quickly. (This move won't be needed in the normal games but in some Custom Levels. Careful in TR3 this won't work, Lara will stop the sprint sliding to a halt.)