Diallo falls to De Minaur at Queen's Club, will face Shapovalov next

Top seed Alex de Minaur of Australia defeated Montreal's Gabriel Diallo 7-6 (8), 6-3 in first-round action Tuesday at the HSBC Championships.

De Minaur outlasted Diallo in a back-and-forth first-set tiebreaker, forcing the Canadian into an unforced error while serving on set point.

The Australian took control of the second set with a hard-fought break to go up 3-1.

Diallo failed to convert three game points, and de Minaur finally converted his fourth break point in a game that took 15 minutes 25 seconds to complete.

Shapovalov ends 5-match losing streak with 1st-round win at Queen's Club

Gabriel Diallo falls in opener, ending Canadian's Libema Open title defence

De Minaur will next face Denis Shapovalov of Richmond Hill, Ont., at the ATP 500 grass-court event at London's Queen's Club. Shapovalov broke a five-match losing streak with a first-round victory over Britain's Jack Pinnington Jones on Monday.

Diallo, who saw his world ranking drop 30 points to No. 84 after he failed to win a match in his title defence at last week's Libema Open, saw his record this season drop to 6-15.

Canada's Leylah Fernandez was upset 6-4, 7-6 (1) by Turkey's Zeynep Sonmez in first-round action Friday at the Nottingham Open.

Fernandez, seeded second at the WTA 205 grass-court event, had seven aces, but she hit into four double-faults and was broken three times.

Sonmez evened her career record against Fernandez at 1-1.

Fernandez came out on top earlier this year when she beat Sonmez in three sets at the clay-court Stuttgart Open.

The 23-year-old Fernandez, from Laval, Que., saw her season record drop to 11-17.

The world No. 22 has lost her first match in four of her last five events.

Serena Williams' comeback hit a bump Tuesday with a loss in