By July 1964, only seven cosmonauts remained eligible for the Voskhod crew after some were disqualified on medical grounds. On 6 July, Komarov was named as the commander of the back-up crew for Voskhod 1. After much heated debate over several months about the selection of the crew between Nikolai Kamanin and Sergei Korolev, Komarov was named as prime crew commander on 4 October 1964, by the State Commission; just eight days before its scheduled launch. Kamanin played tennis with the Voskhod crew that evening and noted that Komarov played poorly in comparison to his crew: Boris Yegorov and Konstantin Feoktistov.