Ten-man Rangers recovered from two goals down to draw 2-2 with Aberdeen and make Celtic wait until after the split to secure the William Hill Premiership title.
Leighton Clarkson opened the scoring with a superb free-kick in 34 minutes and Pape Gueye doubled the Dons' lead after Ross McCausland had been sent off for a second booking.
Hamza Igamane reduced the deficit early in the second half and Ianis Hagi swept home a spectacular equaliser deep into stoppage time to earn a dramatic draw.
In-form Hibernian saw off Dundee 4-0 at Easter Road to extend their unbeaten league run to 17 games and move three points clear in third place.
Rocky Bushiri opened the scoring after 26 minutes and Kieron Bowie grabbed a second-half double, with fellow substitute Dwight Gayle also on target for David Gray's men.
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