Sorry, I don't play skywars.
But, I was playing eggwars once and there was just me and this other egg rusher, so we both had stone equipment, and he started building a tower, and I started building after him. Eventually we both ran out of blocks and just sat there, until he got bored and actually threw me some blocks so I could keep chasing him. When we both ran our of blocks I jumped down then he jumped after me and knocked me into the void.