SGPs let you combine a moneyline, a total, and a player prop in one ticket. The book adjusts the combined price to remove most of the correlation edge — so SGPs typically have much worse EV than standalone parlays. Popular because they're intuitive, not because they're smart.
Markets & bet types
Same-game parlay (SGP)
A parlay of legs within one game, priced by the book to account for correlation.
Example
Chiefs ML + Mahomes over 2.5 TD + game over 52.5 — book prices this to remove the natural correlation.