At around 9.10pm a 52-year-old man was walking along Dixon Avenue with his partner when he was approached by another man.
The man produced a metal bar and proceeded to attack the man, before pushing the woman to the ground.
It is understood that there were a number of members of the public in the area at the time, and the man was chased along the road by two people.
Emergency services attended and the victim was taken by ambulance to the Queen Elizabeth University Hospital.
Medical staff describe his condition as stable.
A 52 year old man has been arrested in connection with the incident and enquiries are continuing.
Detective Sergeant Keith Runcie from Cathcart CID said: “I am appealing to anyone who was in the vicinity of Dixon Avenue and witnessed the incident to please get in touch.
“In particular I would like to speak to the two people who chased the man along the street as well as any motorists with dash-cams who were in the area and may have captured footage of significance to the investigation.”
Anyone with information is asked to contact Cathcart CID via 101, quoting incident number 3821 of Sunday 23 December 2018. Alternatively CRIMESTOPPERS can be contacted on 0800 555 111 where details can be given in confidence.