Clash/Competitive

Yo guys!I have a problem about this and have a few questions...My friend and me successfully made team,but problem is in it 2 player cant participate at Saturday if we win at Friday.My first question is can my team have replacements for those 2,and then if we win at Saturday too,can guys who played at Friday play at Sunday?Second question is,if its possible to have replacements for one day,does everyone in team(replacements for Saturday too)get rewards?Sorry for my English,and thanks !