Boro were without a handful of first-team players against the non-league outfit, yet Neil Warnock was still able to name a strong side for the fixture.
Former Bristol City forward Jamie Paterson, who is on trial at the club, started his second friendly match for Boro after playing in the 2-1 win over Plymouth last week.
Defender Sol Bamba, who has also been training with Boro, came off the bench in the second half when the Teessiders made wholesale changes just after the hour mark.
Things appeared to be going to plan for the visitors when Dael Fry headed them ahead inside six minutes, yet goals from York duo Mackenzie Heaney and Mark Beck before half-time turned the game on its head.
Here’s how each Boro player fared.
13. Chuba Akpom - N/A
(for Ikpeazu, 61) Another appearance off the bench. Didn’t receive a clear-cut chance as he tried to drop deep to link up play. N/A Photo: Jacques Feeney
14. Dejan Stojanovic - N/A
(for Lumley, 64) Didn’t have a shot to save when he came on. N/A Photo: Martin Rose
15. Lee Peltier - N/A
(for Hall, 64) Suffered a clash of heads in the closing stages and was forced off just before full-time. The defender appeared to be ok as he walked down the tunnel. N/A Photo: Pool
16. Sol Bamba - N/A
(for McNair, 64) On trial at the club as he builds up his fitness. Was involved in a few crushing challenges. N/A Photo: Getty Images