First 5 innings (F5) bets are MLB markets settled by the score after the top of the 5th inning is complete (the standard official-game minimum). F5 isolates the starting pitchers from the bullpen, so F5 lines and ROI are tracked separately from full-game lines on LineTerminal.
First 5 Innings (F5)
A bet on the score after only the first five MLB innings, isolating starting pitchers.