Gyro Zeppeli (ジャイロ・ツェペリ Jairo Tseperi?), originally San Diego Beach - September 23, 1890 - 2 Days to Start (2) (サンディエゴビーチ 1890年9月23日 スタート2日前 その② San Diego Bīchi Senhappyakukyūjū Nen Kyū Tsuki Nijūsan Nichi Sutāto Ni Nichi Mae Sono 2) in the WSJ release, is the seven hundred fifty-fourth chapter of the JoJo's Bizarre Adventure manga. It is also the second chapter of Steel Ball Run.
The chapter begins focusing on a character named Pocoloco, who decides to join the Steel Ball Run race. He wants to win enough money to help his grandfather build a barn and then live an easy life with the leftover money.
Gyro confronts a man for stealing some of his entry fee money. The man is held back by some onlookers, who suggest taking the man to the sheriff. After Gyro finishes paying the rest of the entry fee with his money, he is confronted once again by the thief who stole his money. The thief goads Gyro to try and kill him with his Steel Balls. He steals one of the onlooker's guns and points it at Gyro. He is tackled to the ground by the onlookers, going on to say that he will join the race to follow and block Gyro's path through it all. Gyro tells the onlookers to give the thief back the gun he was holding, and that he will not press charges against the man, so they should let him go. The onlookers hand the gun back to the thief and let him up. Gyro tells him to pick up the gun and warns him that if he picks it up it will be a "sign" that he's going to bother Gyro.
As more people crowd around Gyro and the thief, Johnny Joestar is seen trying to get into the crowd. Gyro looks at the thief as he inches his hand to the gun and stops, saying that everything he said earlier was just a joke The sheriff approaches, and as he questions what the thief and Gyro are doing, the thief picks up the gun and points it at Gyro, intending to shoot him. Before he can, he is hit in the shoulder by Gyro's Steel Ball. The crowd looks on in shock. Gyro tells the thief that he isn't a nice guy and warns him to let go of the gun and go see a doctor before lunch. The thief calls Gyro a bastard and tries to shoot him, but the gun is turned around and fires at him.
While Gyro walks away from the scene, a few of the onlookers ask the sheriff to arrest Gyro. He refuses, stating that it was a duel. Both sides had agreed to it, and no laws were broken, so he doesn't have the right. Johnny goes after Gyro, thinking to himself that he saw the Steel Ball Gyro threw spin at a high speed. Catching up to Gyro, Johnny touches the steel ball he just threw, but Gyro warns him not to, since it is still spinning. Johnny touches the ball, and for a brief few moments his legs move. He thinks to himself about how he started walking from adolescence to adulthood after meeting Gyro, who is a mystery from beginning to end.