when you see that, it's called an Asian Handicap line. What it means is say you lay $125 to win $100, in reality you're actually laying $62.50 to win $50 on u2.5 and $62.50 to win $50 on u3. So if the final score is 3 goals, you push the u3 bet but lose $62.50 on the u2.5 bet. You would need no more than 2 goals scored to actually profit the full $100.
