Reuters Sports News Summary

Following is a summary of current sports news briefs. Rookie signings: Cardinals' Murray inks $35.1 million deal

Arizona Cardinals quarterback and No. 1 overall draft pick Kyler Murray signed his rookie contract on Thursday, a four-year deal worth $35.1 million fully guaranteed. Like all first-round pacts, it includes a fifth-year team option. Murray repaid a $4.66 million signing bonus to the Oakland A's and, according to The MMQB, turned down more than $18 million in guarantees from the A's when he announced his full commitment to football instead of baseball. His deal with the Cardinals includes a $23.59 million signing bonus and will count $6.39 million against the cap in 2019. Motor racing: Hamilton tightens the gloves for battle with Bottas

Lewis Hamilton says he will be tougher on track to Mercedes team mate Valtteri Bottas now that the Finn is again leading the Formula One championship, even if relations would remain respectful. The five-times world champion said after Bottas won the Azerbaijan Grand Prix, the team's fourth successive one-two finish, that he had been "too friendly" at the start and "basically gave it to him". Golf: Koepka in the hunt at Byron Nelson ahead of PGA

Brooks Koepka did not get the luxury of seeing the full Trinity Forest layout before the opening round of the AT&T Byron Nelson in Dallas but that did not prevent him from shooting a six-under-par 65 on Thursday. Koepka, who will defend his PGA Championship title next week, saw the back nine during a Tuesday practice round but did not get a chance to play the front nine as rain washed out the pro-am event on Wednesday. Commissioner Silver wants half of new NBA referees and coaches to be women

NBA Commissioner Adam Silver on Thursday made a call for more gender diversity among referees and head coaches in a league he has overseen for five years. Silver, speaking during a moderated discussion at The Economic Club of Washington, D.C., said two of the last five referees brought into the NBA from its developmental league were women, which brought the total number to three. Federer survives match points to beat Monfils

Roger Federer survived two match points against French maverick Gael Monfils to extend his claycourt comeback and reach the quarter-finals of the Madrid Open on Thursday. He was joined in the last eight by five-times Madrid champion Rafael Nadal and world number one Novak Djokovic. NBA notebook: Warriors' Durant done for Rockets series

Kevin Durant is done for the rest of the Western Conference semifinals, and head coach Steve Kerr said the Golden State Warriors must grasp the task ahead: Replace the best player in the NBA. "He's been the best player in the NBA in the playoffs. He's been phenomenal," Kerr said Thursday night, confirming Durant is several days or more from being able to play basketball. Golf: Jordan takes British Masters lead with course record 63

England's Matthew Jordan fired a brilliant nine-under-par 63 for a new course record at the Hillside Golf Club to grab the lead in the British Masters first round on Thursday. Making only his ninth European Tour appearance, the 23-year-old showed no signs of nerves, finishing two shots ahead of compatriot Matt Wallace and Marcus Kinhult of Sweden. MLB notebook: Some Red Sox skip White House visit

While manager Alex Cora, a native of Puerto Rico, and about a dozen players of color skipped a visit honoring the world champion Boston Red Sox at the White House on Thursday, President Donald Trump avoided discussing the controversy. "Frankly, they were unstoppable. I watched," said Trump, skipping any mention of Cora or the absent players by name at the ceremony that lasted about 10 minutes. World number one Osaka exits Madrid Open

World number one Naomi Osaka lost in three sets to unseeded Swiss Belinda Bencic in the Madrid Open quarter-finals on Thursday as Simona Halep, Sloane Stephens and Kiki Bertens completed the final four line-up. Osaka, 21, admitted she over-thought about the need to win the match in order to retain her ranking at the top of the women's game as she went down 3-6 6-2 7-5. NFL notebook: Seahawks officially cut ties with Baldwin, Chancellor

The Seattle Seahawks officially severed ties with two longtime standouts who are expected to retire due to health concerns, waiving wideout Doug Baldwin and safety Kam Chancellor with failed physical designations. "The Seahawks have made the difficult decision to terminate/failed physical Doug Baldwin and Kam Chancellor," general manager John Schneider said in a statement. "These are two of the most iconic players in franchise history and both were instrumental in establishing our championship culture, great examples of competitiveness and leadership on the field and in the community.