Kamron Reid, 20, Lewis Green, 21, and Joseph Till, 21, have all previously been charged with the murder of 21-year-old Shane Mayer and are set to stand trial.
Ramani Sanderson is also accused of murdering Mr Mayer and is set to stand trial on the same day.
Mr Mayer died in hospital three days after he was stabbed in the leg during a fight in Forge Road, Darlaston, on July 24, 2019.
Sanderson was arrested two days after the killing but was then released without charge.
The 20-year-old was arrested again from his home in Walsham Road, near Peckham, London, in June last year and charged with murder.
Reid, of Herberts Park Road, Bloxwich; Green, of Heathfield Lane West, Darlaston, and Till, of Summer Street, Willenhall, are set to stand trial alongside Sanderson on April 12.