Conversation so far:
Where does Andy pick up in season 4?
The fourth-season premiere, "Fun Run", has Andy competitively participating in Michael's superfluously named run for rabies prevention through strategically drafting Kevin, although he falls prey to "nipple chafing..
Does he have any rivalries with Dwight?
Dwight uses pressuring negotiation tactics in order to buy Andy's Nissan Xterra at a reduced price, only to flip it for profit on eBay much to Andy's protest.
Does Andy get revenge?
CANNOTANSWER.

Question: Are there any other rivalries going on?
Self-contained rewrite: Other than Andy Bernard and Dwight Are there any other rivalries going on in the series?