George Saville put the visitors in front with an excellent looping header before Liverpool loanee Sheyi Ojo drew Cardiff level in the second half.
Our Boro writer Joe Nicholson has dished out his marks following the match – scroll down and flick through the pages of our picture gallery to see who impressed for the Teessiders:
1. Marcus Bettinelli - 7
Made a couple of important saves before Cardiff’s equaliser, notably to deny a curling effort from Will Vaulks. 7 Photo: Alex Pantling
2. Anfernee Dijksteel - 7
Another fine display on the right of Boro’s back four. Caused a few problems going forward in the first half and saw out his defensive duties. 7 Photo: Richard Heathcote
3. Paddy McNair - 7
Free-kicks were a threat yet again. Was caught out a few times at the back but another solid display. 7 Photo: Getty Images
4. Dael Fry - 8
Stood up to the physical challenge against Cardiff striker Kieffer Moore.Kept the hots at bay for most of the afternoon. 8 Photo: Alex Davidson