ˈɑːt pˈaɪ ɪz ɐ spˈænɪʃ bˈaɪktɹˈaɪəlz ɹˈaɪdɚ, ˈɔfən ɹᵻɡˈɑːɹdᵻd æz ðə mˈæn ɹᵻspˈɑːnsᵻbəl fɚðə dˈɪsɪplˌɪnz ˈɔːɹɪdʒˌɪn.
Ot Pi is a Spanish bike-trials rider, often regarded as the man responsible for the discipline's origin.