NEWPORT, R.I. (AP) Konstantin Kravchuk and Frank Dancevic each upset a ranked opponent on Tuesday in the first round of the Hall of Fame Tennis Championships.
Kravchuk beat No. 5 seed Victor Estrella Burgos 6-4, 6-4 and Dancevic eliminated No. 7 Tennys Sandgren 6-7 (5), 6-3, 6-2.
Sandgren and top-ranked John Isner were the only seeded Americans in the field. Isner will play Sam Groth, who faced match point and rallied past American qualifier Austin Krajicek 6-7 (3), 7-6 (2), 6-3. Groth had 23 aces and 13 double faults.
The Americans lost five of the six overall singles matches on Tuesday and the Australians won three.