I was surprised to see Master Roshi have such a notable role in Dragon Ball Super. By the start of Dragon Ball Z, his fighting days were over.
So it’s honestly a little ludicrous to see Master Roshi fight characters who were much stronger than Raditz.
It was even more ridiculous to see him fight characters on par with Goku and Vegeta during the tournament of power.
The only thing that made sense was him using the evil containment wave against Frost.
Which made it all rather pointless when he misses the bottle.
After losing to Frost, Master Roshi falls to exhaustion and thus gets eliminated from the tournament of power.