I took as he was a shot in the arm for the offense. OBJ was added mid-season. Kupp was having a historic season. OBJ does not have to be everything to this offense, but he can be a shot in the arm to the offense. OBJ has scored 6 TDs and some clutch 3rd down conversions. He has been a shot in the arm.
[
idioms.thefreedictionary.com]
"a shot in the arm
1. Literally, an injection of drugs. This phrase can refer to both legal and illegal substances.
2. Something that revitalizes, reinvigorates, or encourages someone or something."
I am hoping that since he posted about the PED test, he is confident he has nothing to worry about.