Global Yahoo Advertising Policies

At all times while ad campaigns are running, advertisers must be in compliance with all applicable regulations, including the Unlawful Internet Gambling Enforcement Act (UIGEA), as well as industry best practices.

• Targeting to 21+ is required.
• Advertising for daily fantasy sports is only allowed where permitted by state or local law.

Yahoo:

Ads for fantasy sports should not be placed on anything related to the NCAA.

See Appendix C, Online Gambling, International Restrictions