It isn't always easy to get a read on fantasy football start 'em, sit 'em matchups.
Look at the start of Week 4 on Thursday Night Football for proof. There, Los Angeles Rams quarterback Jared Goff looked to be in a brutal matchup against the Minnesota Vikings, both based on reputation and the fact the unit had even held Aaron Rodgers in check from a fantasy perspective.
Naturally, Goff scored 39.3 points.
So goes the risk-reward of playing matchups, yet it is still one of the key factors in overall league results.