A 21-year-old man has been arrested on suspicion of murder in connection with the death of footballer Jordan Sinnott.
A 20-year-old man who had previously been arrested has been released without charge.
Two other 21-year-old men remain in police custody.
Sinnott, 25, was found unconscious with a suspected fractured skull following two disturbances in Retford on Friday night and in the early hours of Saturday morning.
He was taken to hospital for treatment for his injuries.
The 25-year-old died in hospital just before 6pm on Saturday surrounded by his family.
The midfielder played for Matlock Town after moving on loan from Alfreton Town.
He was described as a "model footballer and an exceptional talent".
Matlock Town, who play in the Northern Premier League, had postponed their match against Mickleover Sports on Saturday after hearing about the incident.
A 27-year-old man, who was arrested on Saturday, has now been charged with grievous bodily harm and actual bodily harm in connection with a separate assault.
It is now understood to have taken place after Mr Sinnott was fatally assaulted.
Connor Woodcock, from Retford, is due to appear before Mansfield Magistrates’ Court today (27 January).
Two other men were injured in the later assaults, with a 27-year-old man sustaining a suspected broken nose and a 44-year old man receiving a suspected broken jaw.
A team of detectives has been working hard on this investigation, which is gathering pace.