Older player won 25 of the last 31 Slam finals/semifinals with 2+ years of age difference

[Lew II]

2+ years older won

2016 UO SF Wawrinka b. Nishikori
2016 UO F Wawrinka b. Djokovic
2017 AO SF Federer b. Wawrinka
2017 AO SF Nadal b. Dimitrov
2017 AO F Federer b. Nadal
2017 RG SF Nadal b. Thiem
2017 RG SF Wawrinka b. Murray
2017 WI SF Federer b. Berdych
2017 WI F Federer b. Cilic
2017 UO SF Nadal b. Del Potro
2017 UO SF Anderson b. Carreno Busta
2018 AO SF Federer b. Chung
2018 AO SF Cilic b. Edmund
2018 AO F Federer b. Cilic
2018 RG SF Nadal b. Del Potro
2018 RG F Nadal b. Thiem
2018 UO SF Djokovic b. Nishikori
2019 AO SF Djokovic b. Pouille
2019 AO SF Nadal b. Tsitsipas
2019 RG F Nadal b. Thiem
2019 WI SF Federer b. Nadal
2019 UO SF Nadal b. Berrettini
2019 UO F Nadal b. Medvedev
2020 AO SF Thiem b. Zverev
2020 AO F Djokovic b. Thiem

Total matches: 25

2+ years younger won

2018 UO SF Del Potro b. Nadal
2019 RG SF Nadal b. Federer
2019 RG SF Thiem b. Djokovic
2019 WI F Djokovic b. Federer
2019 UO SF Medvedev b. Dimitrov
2020 AO SF Djokovic b. Federer

Total matches: 6

 

[Tennis_Hands]

The poor table ....