that sounds like a very dangerous bet to take. So you have to guess exactly how many runs will be scored? Judging by the very wide variety of cricket scores I have seen that could go horribly wrong for anyone betting!
Yes you could say $1 a run in the morning session with a spread of 100-120 runs. f they only score 60 then you are losing 40 dollars and if they scored 200 you would be out of pocket by 80. If they do in fact score 110 then you would earn $10. Most people would bet a higher stake though so you could seriously wipe out.