Those prematch odds are based on the statistics which bookmaker use to create odds. There's a low chance for the result to not go that way but that's already included in there odds computation. Sometimes its good bet live if the result is not what many expecting or vice versa. At the end, This is still gambling and anything is possible to occur so answering odds value question, It's worth to pick a love bet for someone that was supposed to be dominating the game but somehow have a bad start because this only happens rarely and the odds usually increase at that particular moment.
Yesterday in the WNBA, Connecticut Suns played against Washington Mystics.
Prematch Suns were 1.30 and Mystics 3.50
Washington led by 17 in the first half, were completely dominant. Then you got 2 quarters of opposite domination by the Suns.
It ended 66-66 and went into an Overtime.
Once the OT started the odds were 1.50 on the Suns (some sites offered only 1.40) -
The Suns played at home and the momentum completely changed towards them - stll, it's risky but they won by 2 points.