There are four rearranged fixtures in the cinch Premiership on Wednesday, three of them postponed at the weekend due to the Viaplay Cup semi-finals.
Leaders Celtic have a nine-point advantage at the top of the table as they prepare to host St Mirren, who inflicted their only domestic defeat of the season back in September.
Kilmarnock, who currently occupy 11th place, take on second-placed Rangers at the BBSP Stadium, Rugby Park. That match is live on Sky Sports, kick-off 8.00pm.
There's a big game at Tynecastle where Heart of Midlothian, in third, will be looking to increase their six-point lead over an Aberdeen side in fifth spot.
Livingston are up to fourth place after beating St Johnstone 4-2 in Perth on Saturday and welcome Dundee United to the Tony Macaroni Arena tonight.