When Harvey presents Sabrina with an anniversary gift Sabrina mentions Harvey hitting her in the head with a football during the Pilot. The events of the Pilot saw the Witches Council turn back time so this never happened and Sabrina caught the football instead.
When Hilda and Zelda hear that a dangerous Jewel Thief has escaped from the other realm, they board up the linen closet, however when Sabrina is later chasing Martha, her pen pal, they go into the linen closet which has been unboarded, with no marks of ever having had boards nailed to it.