Tanaka's spiking evolves significantly throughout the series as he hones his skills, improves his technique, and gains more experience on the court. At the beginning of the series, Tanaka may struggle with consistency and accuracy in his spikes. However, as the series progresses, he becomes more adept at reading the opponents' defenses, adjusting his approach, and delivering powerful and strategic spikes to score points for his team. His determination, hard work, and passion for volleyball contribute to his growth as a spiker, making him a key player in crucial moments during matches.