<P> During the match , players may be replaced ( for injury ) or substituted ( for tactical reasons ) . A player who has been replaced may not rejoin play unless he was temporarily replaced to have bleeding controlled ; a player who has been substituted may return temporarily , to replace a player who has a blood injury or has suffered a concussion , or permanently , if he is replacing a front - row forward . In international matches , eight replacements are allowed ; in domestic or cross-border tournaments , at the discretion of the responsible national union ( s ) , the number of replacements may be nominated to a maximum of eight , of whom three must be sufficiently trained and experienced to provide cover for the three front row positions . </P>
<P> During the match , players may be replaced ( for injury ) or substituted ( for tactical reasons ) . A player who has been replaced may not rejoin play unless he was temporarily replaced to have bleeding controlled ; a player who has been substituted may return temporarily , to replace a player who has a blood injury or has suffered a concussion , or permanently , if he is replacing a front - row forward . In international matches , eight replacements are allowed ; in domestic or cross-border tournaments , at the discretion of the responsible national union ( s ) , the number of replacements may be nominated to a maximum of eight , of whom three must be sufficiently trained and experienced to provide cover for the three front row positions . </P>
how many subs can you make in rugby union
how many subs can you make in rugby union
a maximum of eight
a maximum of eight