Ross County v East Fife - Friday (BT Sport & BBC ALBA, 7.45pm)
- Ross County have knocked out Hearts Colts, Raith Rovers, Montrose and Motherwell Colts
- East Fife have beaten Cowdenbeath, Partick Thistle and Queen of the South
- The Bayview club progressed to the last four after Bohemians withdrew
- The Staggies have won the Challenge Cup twice and been runners-up twice
- East Fife are bidding to reach the final of this competition for the first time
- Darren Young's side have won five of their last six games in Ladbrokes League 1
- The Staggies are top of the Championship, three points ahead of Ayr United
- Ross County’s last game was a 2-2 draw against Inverness CT in the Scottish Cup
- East Fife lost 1-0 at home to Partick Thistle in the Scottish Cup last weekend
Connah’s Quay Nomads v Edinburgh City (S4C, 7.25pm)
- Edinburgh City have beaten Albion Rovers, East Kilbride, Arbroath and Alloa
- Connah's Quay have knocked out Falkirk, Coleraine and Queen's Park
- Edinburgh City are top of Ladbrokes League 2, four points clear of Peterhead
- James McDonaugh's side drew 0-0 at Peterhead last weekend
- City striker Blair Henderson has scored 31 goals in all competitions this season
- Connah’s Quay Nomads are top of the Welsh Premier League
- Andy Morrison’s team thrashed Caernarfon Town 6-2 last weekend
If the scores are level after 90 minutes then extra time, and penalties if required, will decide the outcome of the semi-finals.