如何基于R中受限制的因素从数据帧中抽取随机样本？

Question

我已经考虑了一段时间，很抱歉，这太简单了，但是我刚开始使用R。

我有一个基本数据集，并希望基于三个因子列创建两个“团队”。我正在尝试根据我定义的某些类别按比例分配玩家，在这种情况下

Jugador <- c("Player1","Player2","Player3","Player4","Player5","Player6","Player7","Player8","Player9","Player10","Player11","Player12","Player13")
RangoEdad <- c("3","2","2","3","3","2","2","2","3","3","1","1","1")
Sexo <- c("M","F","M","M","F","M","F","M","M","F","F","M","M")
Fam <- c("1","2","2","3","3","3","4","4","5","5","5","5","5")

draft <- cbind(Jugador, RangoEdad,Sexo,Fam)
draft.df <- as.data.frame(draft)

draft.df$RangoEdad <- as.factor(draft.df$RangoEdad)
draft.df$Fam <- as.factor(draft.df$Fam)

我现在能想到的就是创建各种因素组合的选择，然后从每个因素中取样并“抽取”。但我相信有更好的解决方案。

预期的输出应该是两支球队，每个类别至少有一名球员（如果可能，球员1拥有自己的类别）。