GK - Trevor Carson (Dundee)
Dundee made it into the fifth round of the Scottish Cup thanks, in no small part, to the late heroics of their goalkeeper who made a number of late saves to preserve a clean sheet and 1-0 victory over arch-rivals Dundee United.
DEF - Callum Penman (St Mirren)
The 17-year-old made his first start for Saints as they defeated Queen of the South 3-1 at Palmerston. Penman put in a thoroughly impressive display as he belied his youth and inexperience to be one of St Mirren's top performers on the day.
DEF - Sam Graham (Airdrieonians)
The defender was imperious at the back as Airdrie managed to avoid a potential cup shock with ease, winning 5-1 at Dumbarton.
DEF - Paul Hanlon (Raith Rovers)
Raith advanced to the next round away at fellow Championship side, and division leaders, Falkirk despite falling behind late in the match. The 2-1 extra-time victory was possible thanks to a stellar defensive display with Hanlon putting in arguably his best performance since joining from Hibs in the summer.
DEF - Ewan Otoo (Dunfermline Athletic)
Played in midfield but we're squeezing him in at his other position of left-back after Otoo stood out above his Dunfermline team-mates during their 3-0 triumph over Stenhousemuir.
MID - Jay Henderson (Ayr United)
This week's Star Man comes from the most one-sided victory in the cup this weekend as Ayr went to Broxburn Athletic and ran out 8-0 winners. Henderson bagged himself a hat-trick in the contest.
MID - Callum McGregor (Celtic)
McGregor opened the scoring during Celtic's tie against Kilmarnock with what is fast becoming a patented low drive from distance. He would go on to be a key influence on the midfield throughout as the hosts had to be patient to pick up a 2-1 win.
MID - Sven Sprangler (St Johnstone)
Saints got themselves a long-awaited victory and booked themselves a place in the next round with a 1-0 home victory over Motherwell. Sprangler was everywhere in the midfield area as he constantly repelled Motherwell's attacks.
MID - Duk (Aberdeen)
Two goals and an assist from the attacker helped Aberdeen to eventually pull away from Elgin City and earn themselves a first victory after 12 matches without, as they won 3-0 at Borough Briggs.
FW - Robbie Muirhead (Livingston)
The shock of the round came in Dingwall as Championship side Livingston knocked out top-flight Ross County with a 3-2 victory after extra-time. Muirhead got a goal and an assist during the win.
FW - Cyriel Dessers (Rangers)
He may have missed an early open goal but Dessers would put that behind him to bag a hat-trick as Rangers defeated Highland League side Fraserburgh 5-0 at Ibrox.