1980: Matt Mattingly defeating Herman Talmadge in Georgia
1982: Jerry Brown losing by nearly 7 points in California
1984: Mitch McConnell winning in Kentucky
1986: Slade Gorton losing in Washington
1988: The Democrat coming so close in Wyoming
1990: Paul Wellstone winning in Minnesota
1992: Fritz Hollings nearly losing in South Carolina
1994: Fred Thompson winning Tenneesse in a landslide
1996: Tim Hutchinson winning in Arkansas
1998: John Edwards winning in North Carolina
2000: John Ashcroft losing to a Dead candidate
2002: Tim Hutchinson losing in Arkansas
2004: Jim Bunning nearly losing in Kentucky
2006: Really nothing but id say Jim Webb winning in Virginia
2008: Elizabeth Dole losing by 8 points in North Carolina
2010: Scott Brown winning the senate race in Massachusetts(Dems losing in Illions was actually expected)
2012: Heidi Heitkamp winning in North Dakota
2014: Mark Warner nearly losing in Virginia
2016: Jason Kander nearly winning in Missouri
2018: Doug Jones winning the Alabama Special(Yes its 2017 but nothing else was a surprise really)
2020: Susan Collins winning so easily in Maine
For 2018, you could say Bill Nelson losing.