Román Mejías's Three-Home-Run Game, 1958

Román Mejías hit three home runs in one game for the Pittsburgh Pirates against the San Francisco Giants on May 4, 1958. The Pittsburgh Pirates won 6–2.

The game was played at Seals Stadium in San Francisco. The game took 2h 27m. It was a day game.

It was the only time Román Mejías managed it. Johnny Antonelli started for the San Francisco Giants. Frank Dascoli umpired behind the plate. It is the second of six three-home-run games the archive records that season.