I would see how the giants play tonight and see how their defense looks and if they can establish some passing game. As it stands now, I would go Siemien > Rivers > Wentz bc BUF will be exploitable. Rivers hasn’t been great fantasy-wise the entirety of his games, but he has come through to just boost his points to about 17.5, which has been serviceable for me. Rivers has the weapons it seems, but he has only started to put up passing points in the second half of games in Week 1/2 with LAC losing.
Rivers this year:
18 ATT ahead in games versus 40 ATT behind
28 ATT in first half versus 44 ATT in second half
However, I might be tempted to put up Wentz bc of the sheer volume of his passing (320 yds avg over 2 games and 4 TDs for avg of 21.85 points despite a fumble and 2 picks) and the fact that the Eagles have a crappy run game now ONLY IF the giants still look crappy.
If the giants look good, Rivers might be the safer second option since he’s thrown 1 INT less and has a better passer rating (in that he’d probably protect the ball better against KC than Wentz might against NYG). He may have a lower upside for fantasy points though if they are ahead…