Ian Horrocks was the match-winner as Wyke Wanderers shocked three-time winners Gildersome Spurs Old Boys 1-0 to reach the Wheatley Cup semi-finals.
Spurs are unbeaten in the Senior A (top) section of the Yorkshire Amateur League but hosts Wyke, who are mid-table in Division One (second tier) of the West Yorkshire League, were sharper on the day.
The Heavy Woollen District FA tie was played on the 3G pitch at the Appleton Academy in Wyke, with considerable sweeping required to take standing water off the all-weather surface before the game went ahead.
Gildersome had the majority of possession but could not find their way past Wyke’s two defensive banks of four, who held their shape and discipline well.
Skipper James Tucker excelled in the middle of the park, while man of the match Gavin Turner won everything in the air at the back as Spurs were restricted to long-range shots that rarely troubled keeper Nick Wade.
Wyke counter-attacked swiftly and one of these breaks by right winger Karl Fawcett led to Horrocks netting the 43rd-minute winner.
Yet Spurs passed up a golden chance to level things up with a penalty late on as Lee Thrush sent his spot-kick over the bar.
Yorkshire Amateur League action saw Old Modernians climb out of the Senior A bottom two as they leapfrogged opponents North East Leeds with a 6-2 victory.
Lee Nutton netted both replies to reduce the deficit to 5-2 but Andy Atkins struck four times as Old Mods bagged the points from another match transferred to a 3G pitch.
The same was true in the Senior B division as Farsley Celtic Juniors beat Rodillian 2-1 at Middleton Leisure Centre.
The victory lifted Farsley from fourth place to top spot on goal difference as they overcame having two players sent off in the second half, with Rodillian staying seventh.
Luke Playford opened the scoring for Rodillian inside three minutes but recent signing Louis Surtees equalised before the interval and Craig Farrand converted a 78th-minute penalty winner.