Kyrgios hit an underarm serve on a break point against Medvedev at the US Open. Genius disrespect, or exactly the problem with modern tennis?

Options

• Genius. If it's legal and it works, that's just smart tennis.
• The problem. Disrespecting the game for a highlight reel isn't skill.
• I loved it purely because of how much it got in Medvedev's head.
• I don't care about the ethics, I just want more players brave enough to try it.