Pokémon Giovanni is Ash's Father

I firmly believe that Giovanni is the father of Ash Ketchum because they both have brown eyes and in the second episode his mother told Ash that his father got to Viridian City in 4 days and Giovanni is the gym leader of Viridian City. Plus his mother dated Giovanni and I read somewhere that they slept together one night after her shift which resulted in the birth of Ash but Giovanni left her before he was born.