The Raptor writes, "They look like quite young stags and must have been at it for a while as they really just seemed to be pushing each other around without much gusto."
During the rut the stags roar and posture to assert dominance, and only occasionally fight. The stag that 'wins' gets almost exclusive access to the groups of hinds.
The Raptor's stags seem to have given up in this last picture.
Many thanks to the Raptor for the pictures.