queer one's pitch

/kwˈiə wˈɒnz pˈɪtʃ/

/kwˈɪɹ wˈʌnz pˈɪtʃ/

to queer one's pitch

to prevent someone from achieving what they want by creating problems for them

Examples

1. He queered my pitch by asking for promotion before I did.

2. The idea appears to be to target perceived 'luxury' goods, while not queering the pitch for exporters.