The Yomiuri Giants professional baseball team was dealt another blow Wednesday as an investigative panel set up by Nippon Professional Baseball said two more Yomiuri Giants pitchers had bet on baseball games.

The announcement that Shoki Kasahara, 24, and Ryuya Matsumoto, 22, had gambled on baseball games follows the revelation on Oct. 5 that 32-year-old fellow Giants pitcher Satoshi Fukuda had engaged in gambling.

Betting on baseball games in Japan, which is illegal, has long been a key revenue source for the nation's yakuza.