On Monday, the court was shown three pieces of CCTV footage from inside Tape nightclub on the night of the attack.
The attack lasted no more than 20 seconds, but Brown could be seen hitting the victim four times with a tequila bottle, twice to the head.
Prosecutor, Heidi Stonecliffe KC, described the weapon as a “heavy square-shaped tequila bottle” and said Diaw was approached by Brown at around 03:00.
The footage showed that the nightclub was very small and packed at the time.
The defence described Chris Brown as a “dedicated and a loving father of four children,” someone who is “positive and present”.
The singer is described as having lived “a good and law-abiding life” since his last conviction in 2013.
The events in Tape nightclub were described by the defence as a “short and deeply regretted incident”.
Brown’s defence lawyer told the court that he apologises to all those present at the club at the time of the attack.
“This is an ugly and unattractive incident,” Sallie Bennett-Jenkins KC said.
“It is, however, an incident which was very short-lived, lasting something more than 17 seconds but no more than 20.
“It is something which undoubtedly would have caused distress to those who are present and for which Mr Brown… offers a profound apology to all those present.”
The court heard Akinlolu “genuinely believed” that Brown was “under attack” when he joined the attack, punching Diaw.
Brown was described as being like a “brother” to Akinlolu, his lawyer Laurie-Anne Power KC told the court.
She added: “He genuinely believed him to be under attack and became involved, and thereafter accepts his initial involvement very quickly evolved into the events he has pleaded guilty to.”
Diaw was taken to St Mary’s Hospital in London after the attack. Ms Stonecliffe KC said he was discharged with “pain relief and a diagnosis of head injury and superficial injury of the knee”.
An MRI scan taken in early March showed a “high grade injury to a ligament on the inner side of the left knee”, the court heard.
Defending Brown, Ms Bennett-Jenkins KC said there was a “relatively low level of force” and disputed how significant the injuries were.
The defence argued that the attack left no fractures or broken skin and there was an absence of serious injuries.
Diaw, the victim, was “not supportive of the prosecution” and “withdrew” his support some time after the incident, the court heard.