GW21 DIFFERENTIALS

Onside's top GW21 differential is Tavernier (BOU, 6.8% owned, 5.0 projected xP). Consider buying — BOU have a friendly run-in. Avg 5.0 pts, ceiling 9. Other differentials: Barry (8.4% owned), Thiago (9.2% owned), A.Becker (4.2% owned).

In FPL, a differential is a player owned by fewer than 10–15% of managers. Owning a differential who scores big gives a huge rank boost because the majority of managers miss the points. Onside's DIFFERENTIAL tag identifies players with ownership below 15% who also carry a BUY or STRONG_BUY action rating from the v5 engine — meaning the engine thinks they're genuinely undervalued, not just low-owned for bad reasons.

A hit costs 4 points, so the player coming in has to outscore the one going out by more than 4 across the weeks you keep him — about 1 point a week over a month, or all 4 in a single week if you only hold him for one. Differentials are best brought in for free, on a wildcard or to fix a genuine hole in the squad, not as a speculative hit. Check the GW21 full guide for the highest-projected buys.

The Fantasy Premier League GW21 deadline is Sat 16 Jan, 13:30 UK time. Make sure your differential selections and transfers are confirmed before this time.

Differentials are highest value when you're chasing rank mid-season or in mini-leagues with points gaps. A 15% owned player who scores or assists gives you a 6–9 point swing vs the field compared to a 50%+ template player hitting the same return. Use these picks when your template is strong — not to replace reliable assets, but to add upside beside them.