Seth Daniel Romero is an American professional baseball pitcher for the Cleburne Railroaders of the American Association of Professional Baseball. He played for the Washington Nationals of Major League Baseball (MLB) during the 2020 season. He played college baseball for the University of Houston Cougars and was drafted by the Nationals in the first round of the 2017 MLB draft.

The 2017 Major League Baseball draft began on June 12, 2017. The draft assigned amateur baseball players to MLB teams. The first 36 picks, including the first round and compensatory picks, were broadcast on MLB Network on June 12, while the remainder of the draft was live streamed on MLB.com on June 13 and 14.