Correct

背靠背

/ bèikàobèi / 
Strokes

Definition

back to back

Example

As a Verb

be back to back

1
Bèikàobèi
背靠背
zuò
坐
zhāo
着

sit back to back

2
Bèikàobèi
背靠背
zhàn
站
zhāo
着

stand back against back

As a Noun

back-to-back (game)

3
Dá
打
yī
一
cháng
场
bèikàobèi
背靠背
de
的
bǐsài
比赛

play a back-to-back game; play a back-to-back