It would not be a sport for Muslims to go into. Islam forbids striking the face.
The Islamic sharee’ah permits all things that are beneficial to the body and do not harm it, and it forbids all things that may cause damage or harm to the body. The Prophet (peace and blessings of Allaah be upon him) said: “Your body has rights over you.” (Narrated by al-Bukhaari, Kitaab al-Sawm
If sports are free from things which are forbidden in sharee’ah, then practising those sports is beneficial.
Boxing is based on allowing punches to the face of one's opponent using the maximum force that one possesses. Blows to the face earn more points than blows to any other part of the body. This clearly goes against the teaching of the Prophet (peace and blessings of Allaah be upon him), as narrated by Abu Hurayrah: “When any one of you fights, let him avoid (striking) the face.” (Narrated by al-Bukhaari, al-Fath
details at https://islamqa.info/en/10427