Things what can happen this weekend
Premier League
Nothing can be settled at the bottom - but the Sunderland - Cardiff match will likely see the loser eventually relegated.
Championship
With promotion done the excitement is over the last playoff place. It likely won't be settled this weekend though - unless Reading win while Brighton lose and none of Forest, Ipswich or Blackburn get better than a point.
If Yeovil do not win on Friday, they're down again. Barnsley will join them if they lose and can join them with a draw, if Blackpool or Birmingham net points of any stripe. It's also possible for Blackpool to be sunk, but it'd need a set of 4 results to conspire against them.
League One
The top of the table is just about sewn up. All that can be gained is the final promotion place, but Swindon need chunky wins while Peterborough lose to prolong the race.
If Shrewsbury don't win, they're back down to League Two. Carlisle's game in hand means they can't join them this weekend, but Notts County can if they lose and all three teams above them win.
League Two
The title can go to Scunthorpe, but not until Sunday. If they win and Rochdale don't, they've got one hand on it - needing Chesterfield to avoid winning on Sunday. Any other set of results pushes this battle on one more week - and with the right set of results this weekend, Fleetwood can still win it.
Oxford's play-off hopes rest on a win, but if York win and Southend manage a draw or better, it's immaterial.
It's another nail-biter for Torquay. Only a win will do against Mansfield and, even if they do win, a Northampton win will almost certainly relegate them. If Northampton win and there's a winner in the Wycombe-Bristol match, they're relegated no matter what.
Conference
If Braintree beat already-qualified Grimsby by more goals than already-qualified Cambridge beat Gateshead, Braintree will nick the last playoff place. If not, they need an outrageous result in the Halifax/Kidderminster game.