Segura was scratched from Wednesday's lineup due to knee soreness and is expected to miss Thursday's game as well, Nick Piecoro of the Arizona Republic reports.
Manager David Hale said the issue is not serious, as the young shortstop apparently just slid on some hard dirt Tuesday and is still sore from it. He'll take a couple days off to heal, but should be good going forward as long as he doesn't aggravate the injury down the road.