The phrase "lesser opposition" refers to a group or team that poses less of a challenge or threat compared to others. It suggests that they are not as strong or difficult to defeat. Full definition
However, these have come vs lesser opposition, ozil hasn't performed well in big games and I fear that is where a lot of the criticism takes hold. (justarsenal.com)
An instructor will meet much less opposition when teaching a four year old about traffic safety than a 16 year old. (dontredriving.com)
He's been playing well in there against lesser opposition, so let's see what he can do against the big boys. (justarsenal.com)