Marionette of Sadness
Mr. Baker told the Griffey Brothers to lose their match, but because they saw how Kikumaru and Oshitari played they couldn't just do it.
Aired 15/09/2004EP 151 - Marionette of Sadness
2001
The Prince of Tennis
Echizen Ryoma is a young tennis prodigy who has won 4 consecutive tennis championships but who constantly lies in the shadow of his father, a former pro tennis player. He joins the Seishun Gakuen junior highschool, one of the best tennis schools in Japan, and there along with his teamates he learns to find his own type of tennis in an attempt to defeat his biggest obstacle of all: his father as well as himself.
(Source: Anime News Network)