To make a good SGP, having lots player props, over/under lines, and half time results can add lots of variety and interesting differences in wagers. There are a few reasons for the limited number of sports you can create Same Game Parlays for, but the biggest limitations are the number of betting markets and odds calculations. Bet365 has a few extra SGP sports, but the markets are very limited, so we don't think they really count as you won't be able to get more than a couple legs.