Kisuke Urahara vs. Yammy Llargo

Kisuke Urahara vs. Yammy Riyalgo is a battle during the Arrancar Invasion, taking place in Karakura Town.

Prologue
Aizen sends four powerful Arrancar to Karakura Town to create a distraction that will allow the abduction of Orihime Inoue. They immediately encounter Tōshirō Hitsugaya and his front guard in the Karakura Park. Hitsugaya initially confronts Yammy Riyalgo, who introduces himself as the 10th Arrancar. However Luppi Antenor asks Yammy to let him take on Hitsugaya and his three subordinates together, and Yammy is left without an enemy to fight. At the same time, Kisuke Urahara relieves Renji Abarai, who is busy training with Chad at Urahara's secret training ground from reporting to the battle, saying he will go to face up to the enemy instead.

Battle
Urahara shows up in time to save 10th Division Lieutenant Rangiku Matsumoto from being impaled by the 6th Espada Luppi Antenor, by severing his tentacle. After introducing himself he is seemingly almost attacked by Wonderweiss Margera only to bat the Arrancar away using a blast of energy from his Zanpakutō. Wonderweiss proceeds to fire a energy blast that Urahara has never seen before, but Urahara dodges it only to be hit by another blast from behind. As Urahara falls from the sky Yammy is revealed to be his attacker, laughing as he explains the attack was a Bala, a weaker but much faster version of a Cero. He then proceeds to fire multiple blasts at Urahara's falling body hurling insults with every shot.

Urahara then appears behind Yammy unscathed, taunting and enraging the Espada. Yammy asks him how he was able to survive and proceeds to send another volley of Bala blasts at him. Urahara easily uses Shunpo to appear behind Yammy and hold his Zanpakutō to the Espada's throat. He explains that he has seen him fire off tons of the blasts, and won't be hit by them anymore. Concluding that Yammy can't figure out how Urahara was hit by the blasts and wasn't hurt, Urahara demonstrates his use of the portable Gigai as a decoy. Yammy again becomes enraged and begins to charge a Bala blast. Urahara effortlessly negates the blast with his Zanpakutō and explains that the blasts will no longer work against him, having sufficiently analyzed the Reishi composition of the technique and the Espada's muscle movements, allowing him to dodge or even negate them. He then tells Yammy they should finish the fight.

Before the two can continue their battle, the mission for which the Arrancar were sent to Karakura was completed, and Yammy is surrounded by a Negación ray and pulled back into Hueco Mundo.

Aftermath
The fight ends up being just another fight in a long line of fights. Urahara goes back to his shop and Yammy as usual is angered at his slight loss and that he wont get to kill his opponent.