One can measure character and virtue from the behavior of those playing the sports. Kim had virtue. Serena lacked virtue.
Serena wanted to win at any cost. Kim felt cheated even when declared the winner, because she didn’t win for her excellence.
One of the first lessons of sportsmanship is never to rejoice in winning by the loss of an opponent, but only by one’s accomplishment.
Had Serena held that thinking, she wouldn’t have reacted to the line fault by attacking the judge, but by thanking the judge, working to improve her own game, and thankful she might not have won the play by an illegitimate serve.
You said it all my friend. This statement you made about sportsmanship has to be declared and taught to every young sportsman in the country.