Your prediction is likely to be true based on Chelsea to win and that is all what's majority bet for. At 18 minutes Chelsea had taken a lead with a goal and currently Chelsea are really penetrating, they dominated the almost every aspect. I will not finalize that Chelsea will win because even though it is less than a minute something can't still happen, Chelsea have recorded three shot on target and this shows that Chelsea has their higher chances. Fluminense are also pushing and their effort is quite impressive but they seriously need to put in more effort to achieve their aim but in this manner it's actually look very difficult.
The first half is almost over and Chelsea are leading by one goal. The games would have been a draw if not for Cucurella's goal-line clearance. My observation is that Pedro Neto has been the most outstanding striker on the Chelsea side. He has been mounting pressure on Fluminense's defence. The next 45minutes will determine the club that will make it to the finals. And from the first half statistics, Chelsea are the favourites.