A man fly-kicked a woman unconscious, knocking out her two front teeth.
James Stewart attacked Julie McInally last September 13.
The 29-year-old lashed out after the victim had a confrontation with his ex-partner, Lyndsay Callaghan, 35, in the street in Glasgow’s Sandyhills.
Police eventually had to use a Taser to arrest Stewart.
At Glasgow Sheriff Court on Thursday, Stewart pleaded guilty to assaulting Ms McInally to her severe injury.
Describing the attack, prosecutor Jennifer McKee said: “Stewart ran towards the two women.
“What can only be described as high or flying kicks took place to Ms McInally’s head.
“She fell to the ground and was rendered unconscious.”
Callaghan went on to kick and bite two constables when they turned up.
On Thursday, she pleaded guilty to the assaults and resisting the officers.
Graeme Brown, defending Stewart, said he had initially planned to break-up the row between the two women.
Sheriff Joseph Platt deferred sentencing until next month for reports.