@jsit They emerged at similar times and have always been considered peers with very different appeals. Prince (Kendrick) vs MJ (Drake) isn't tooo far off
Drake responded poorly to a 2013 Kenny verse (Control) about aiming to be the best rapper period. Drake's response suggested personal umbrage
Since then they've both released songs that suggest mutual animosity but never mentioned each other by name until J Cole mentioned Kenny on his verse on a recent song with song with Drake (1/2)