UCF vs South Florida in the War on I-4: South Florida was in the Big East conference and had an advantage over UCF with their BCS tag. Eventually UCF built facilities and joined the same conference which leveled the playing field for awhile. Then UCF became a Top G5 team after claiming a National Championship and has pulled away in the series since the 2017 team.
http://www.winsipedia.com/south-florida/vs/ucf
Start of the Rivalry: South Florida sweeps series 4-0
2005 South Florida Win 31-14
2006 South Florida Win 24-17
2007 South Florida Win 64-12 (Largest Margin of Victory for South Florida, Later climbed to #2 in the BCS rankings in week 8)
2008 South Florida Win 31-24
(Intermission because South Florida didn't want to continue series)
UCF Joins the AAC: UCF and South Florida tied 2-2
2013 UCF Win 23-20
2014 UCF Win 16-0
2015 South Florida Win 44-3
2016 South Florida Win 48-31
More Recently: UCF 5-0 Win Streak
2017 UCF Win 49-42 (UCF's National Title Claim Year)
2018 UCF Win 38-10 (Largest Margin of Victory for UCF)
2019 UCF Win 34-7
2020 UCF Win 58-46
2021 UCF Win 17-13
2022 is likely the last game of the series for awhile. South Florida's OOC schedule is full for awhile.
Fun Fact:
2008 South Florida brought a shovel to dig out the endzone of UCF's new Stadium.