Newly-crowned Morrells Oxford Sunday League Premier Division champions Star Royal took a step nearer to the double with a 2-0 win over Wolvercote in the Presidents Cup semi-final.
Star took the lead after 25 minutes when Neil Drewitt fired home from 20 yards.
But Division 1 champions Wolvercote refused to lie down and continued to press for an equaliser.
However, their fate was finally sealed when Mickey Tighe netted in the 89th minute.
Now Star await the winners of Blackbird Leys Sunday and North Oxford CC in the final scheduled for May 20.
In midweek, Ewan McNeil grabbed a last-gasp winner to give Magdalen Arms a dramatic 2-1 victory after extra time against AFC Blackbirds in the Jack Sadler Cup semi-final.
The teams were locked 1-1 at full time thanks to a Billy Geddes header for Magdalen.
But, as the tie seemed to be heading for penalties, McNeil lobbed over Blackbird's keeper.
Now Magdalen face Cowley Social Club Res, 3-1 winners over Chequers, in the final on Sunday at Oxford City (10.30).
In the Premier Division, Six Bells Kidlington made sure of staying up with a 3-0 victory over visitors Star Wanderers.
Bells made sure of the points thanks to goals from Stuart Palmer, Mark Gaul and Kevin Williams.
Baldons stunned Chase Finance with a rare win in Division 1, defeating their hosts 1-0.
Chase, second in the division, found bottom club Baldons in a determined mood and when Martin Coates rose at the far post to head home a Dave Hallam cross, it was not more than Baldons deserved.
Tackley's topsy-turvy season in Division 3 continued with a 6-2 thrashing of visitors Chalgrove.
Nigel Barrett, Rob Bowyer, Kelly Scott, Greg Finemore, Tony Wetherall netted for Tackley and an own goal completed their tally. Simon Chamberlain and Kelvin Storer were the Chalgrove scorers.
In Division 4, Simon Cullen's last-minute equaliser gave Marston Village a 2-2 draw against Woodchip Wanderers.
Andy Nicholas headed Woodchip into the lead, but a chip from Rober Mechen brought Marston level.
Nicholas restored Woodchip's lead almost immediately only for Cullen to strike at the death.
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