| Games |
Sport (Discipline) / Event |
NOC / Team |
Phase |
Unit |
Role |
As |
|
|
2012 Summer Olympics
|
Tennis |
 GBR |
|
|
|
James Keothavong |
|
|
Singles, Men
(Olympic)
|
|
Match #2 |
Juan Martín del Potro — Kei Nishikori |
Chair Umpire |
|
|
|
Singles, Men
(Olympic)
|
|
Match #3 |
John Isner — Malek Jaziri |
Chair Umpire |
|
|
|
Singles, Men
(Olympic)
|
|
Match #6 |
Kei Nishikori — Nikolay Davydenko |
Chair Umpire |
|
|
|
Singles, Men
(Olympic)
|
|
Match #31 |
Andy Roddick — Martin Kližan |
Chair Umpire |
|
|
|
Doubles, Men
(Olympic)
|
|
Match #2 |
France 1 — Spain 1 |
Chair Umpire |
|
|
|
Doubles, Men
(Olympic)
|
|
Match #1 |
United States 2 — Brazil 2 |
Chair Umpire |
|
|
|
Singles, Women
(Olympic)
|
|
Match #4 |
Caroline Wozniacki — Daniela Hantuchová |
Chair Umpire |
|
|
|
Singles, Women
(Olympic)
|
|
Match #12 |
Vera Zvonaryova — Sofia Arvidsson |
Chair Umpire |
|
|
|
Doubles, Mixed
(Olympic)
|
|
Match 3/4 |
United States 1 — Germany 2 |
Chair Umpire |
|
|
|
2016 Summer Olympics
|
Tennis |
GBR |
|
|
|
James Keothavong |
|
|
Singles, Men
(Olympic)
|
|
Match #1 |
Juan Martín del Potro — Rafael Nadal |
Chair Umpire |
|
|
|
Singles, Men
(Olympic)
|
|
Match #3 |
Rafael Nadal — Gilles Simon |
Chair Umpire |
|
|
|
Singles, Men
(Olympic)
|
|
Match #12 |
Kei Nishikori — John Millman |
Chair Umpire |
|
|
|
Singles, Men
(Olympic)
|
|
Match #4 |
Taro Daniel — Jack Sock |
Chair Umpire |
|
|
|
Singles, Men
(Olympic)
|
|
Match #21 |
Philipp Kohlschreiber — Guido Pella |
Chair Umpire |
|
|
|
Singles, Men
(Olympic)
|
|
Match #29 |
Benoît Paire — Lukáš Rosol |
Chair Umpire |
|
|
|
Singles, Women
(Olympic)
|
|
Match #3 |
Mónica Puig — Garbiñe Muguruza |
Chair Umpire |
|
|
|
Doubles, Women
(Olympic)
|
|
Match #12 |
Chinese Taipei — Romania 1 |
Chair Umpire |
|
|
|
Doubles, Mixed
(Olympic)
|
|
Match 1/2 |
United States 2 — United States 1 |
Chair Umpire |
|
|
|
2020 Summer Olympics
|
Tennis |
GBR |
|
|
|
James Keothavong |
|
|
Singles, Men
(Olympic)
|
|
Match #2 |
Karen Khachanov — Pablo Carreño Busta |
Chair Umpire |
|
|
|
Singles, Men
(Olympic)
|
|
Match #2 |
Kei Nishikori — Illia Ivashka |
Chair Umpire |
|
|
|
Singles, Men
(Olympic)
|
|
Match #2 |
Alejandro Davidovich Fokina — John Millman |
Chair Umpire |
|
|
|
Singles, Men
(Olympic)
|
|
Match #24 |
Stefanos Tsitsipas — Philipp Kohlschreiber |
Chair Umpire |
|
|
|
Singles, Men
(Olympic)
|
|
Match #29 |
Fabio Fognini — Yuichi Sugita |
Chair Umpire |
|
|
|
Doubles, Men
(Olympic)
|
|
Match #4 |
Germany 1 — France 1 |
Chair Umpire |
|
|
|
Singles, Women
(Olympic)
|
|
Match #4 |
Anastasiya Pavlyuchenkova — Sara Errani |
Chair Umpire |
|
|
|
Doubles, Women
(Olympic)
|
|
Match #2 |
Australia 1 — People's Republic of China 1 |
Chair Umpire |
|
|
|
Doubles, Mixed
(Olympic)
|
|
Match 3/4 |
Australia — Serbia |
Chair Umpire |
|
|