Kevin Owens vs. Sami Zayn
The rivalry between these two former friends is ongoing throughout years. They changed various wrestling promotions (ROH, PWG and then on NXT) and finally landed in the biggest one in WWE main roster but the rivalry is still the same. So, this epic feud will go down in the history book of the pro-wrestling industry irrespective of the outcome from Battleground. Last time they squared off was at payback 2016 and delivered a quality match. They are bound to deliver with another one on Sunday. Since the last bout was won by Owens, this one should be named to Zayn. WWE may book a Summerslam match with an added stipulation for them, afterwards.