The lines from Casey at the Bat that shows that Casey has strength, confidence, and showmanship are:
"There was ease in Casey’s manner as he stepped into his place;
There was pride in Casey’s bearing and a smile on Casey’s face." and
The sneer is gone from Casey’s lip, his teeth are clenched in hate;
He pounds with cruel violence his bat upon the plate."
<h3>Who Wrote Casey at the Bat?</h3>
Casey at the Bat was written by Ernest Lawrence Thayer an American poet and author.
Casey at the Bat is reputed to be the most popular poem about baseball.
Learn more about Casey at the Bat at:
brainly.com/question/2033946