Captain Sisko actor Avery Brooks directed nine episodes of Star Trek: Deep Space Nine that include some of DS9‘s best hours of television, as well as one of its worst. Many Star Trek actors took advantage of the chance to train as directors, and some stars like Jonathan Frakes and Robert Duncan McNeill went on to prolific directorial careers afterward. Avery Brooks was one of several members of the Star Trek: DS9 cast who directed episodes, and made his directorial debut with season 2, episode 25, “Tribunal”.
https://screenrant.com/star-trek-ds9-avery-brooks-episodes-ranked/