1881 U.S. National Championship – Men's Doubles
{'<entity_0>': 'Frederick Winslow Taylor', '<entity_1>': 'Clarence Clark'}
[['Clarence Clark', 'together with', 'Frederick Winslow Taylor']]
The doubles champions of the first U.S. championships were <entity_1> and <entity_0>. In the first round, <entity_1> and <entity_0> defeated Smith and Crawford Nightingale.
['tennis event']