Salts and Tyersal, the remaining sides from the West Riding County Amateur League in the Bradford & District FA Saturday Senior Cup, successfully booked their places in the last four.
Terry Ryan gave Tyersal a 1-0 interval advantage at Thackley, Lewis Morgan levelling before Martin Glen and Damian Rushworth scored to give Tyersal a 3-1 victory.
Salts, last season's runners-up, won by the same scoreline, but only in a penalty shoot-out after being level at 1-1 after extra-time.
Fields dominated and should have won by a comfortable margin, but only had a Glyn Hirst effort to show for their efforts, and even gifted Salts a reply with an own goal.
Steeton maintained their ten-point advantage over their Premier Division championship rivals Bay Athletic with a 2-0 home win over strugglers Littletown, with Arley Barnes and Jamie Longley netting.
Bay, who have played five fewer games, had Sam Jerome, Brighton Mugadza and Nathan Alexander on target in a 3-1 success over Golcar United, for whom John McAliskey replied.
Ventus-Yeadon Celtic missed the chance for a second successive week to move into pole position in Division One when they lost 2-1 at AFC Emley on Friday night.
Jack Portman and Daniel Kaye were on target for new leaders Emley, while Billy Swiatek bagged Celtic’s consolation.
Hunsworth moved up into second after beating bottom-placed Storthes Hall Reserves 7-4, Joel Farrar, Luke Barker and Gareth Wright adding to Dale Wright's four for Hunsworth, Alec Green (2), Joe Fox and Richard Marshall replying for the visitors.
Campion Reserves and Wibsey shared six goals at Manningham Mills, Carl Trennery, Isaiah Parke and Paul Noble (penalty) being on target for Campion, while Mick Burke (2, including a penalty) and Jamie Brennan replied.
Halifax Irish, with games in hand of most of the teams above them, had Jordan Coduri on target twice as they beat Westbrook YMCA 2-1.
Bay Athletic Reserves, after being relegated at the end of last season, continue to dominate the sides chasing promotion from Division Two.
Two goals from Tom Parker and a Jamal Simpson effort gave them their tenth with from 11 starts in a 3-0 win over Salts Reserves.
Steeton Reserves, with four goals from Adam Spencer to add to Ross Bailey and Nick McNally strikes, booked a place in the Keighley FA Supplementary Cup final against Oxenhope Recreation Reserves after a 6-0 semi-final victory over Cowling Reserves.
But it needed a penalty shoot-out for Silsden Whitestar to overcome Manningham All Stars in their Keighley & District FA Challenge Cup semi-final, Whitestar taking the spot-kicks 5-4 after the teams were 3-3 at the end of normal time.
Craven League Division One Whitestar trailed 3-1 at half-time but recovered to 3-3 by 90 minutes and 4-4 by the end of extra-time.
Ben McLennon (2), Danny Cox and Dom Creed netted for Silsden Whitestar, who will now meet semi-finalists Steeton or quarter-finalists Silsden Reserves or Oxenhope Rec.