EverDrive-64 X7. Untied WR when set. I finally managed to get a 2s time that can actually be 100% proven as a 2s run per the timing rules on SRC. When pressing A on the first Play Tournament screen and mashing the Start button right after, there's still no visual cue for the exact frame the Start button was hit, but this way I CAN show an earliest possible frame that the Start button could have been hit (the first frame of the Straight Pool menu). By starting time on the earliest possible frame that the Start button could have been hit, the fact that it's a 2s time is clear (although as a result, it's possible the run is a few frames faster than the timer indicates)
Regardless, speedrunning this game would be a lot simpler if time would begin on the first frame of the initial scoreboard.
Mod note: Timing rules have changed. Time starts on the first visible frame of the initial scoreboard, and time ends on the first visible frame that the tournament results are shown, after winning the tournament. Final time is: 2.450s