When Tyler Marsh stays up late thinking about the season, no single moment sticks out. Not Rickea Jackson going down in the fourth game of the season. Not Skylar Diggins’ Instagram post about being benched. Not any one of Sydney Taylor’s buzzer-beaters. For Marsh, the mental montage is all about what could have been. “It’s a culmination of the close games we were in, where it felt like we coulda won,” he said. Despite Friday night’s impressive w…