All about Federer's mastery over Wawrinka, Helicopters over Lambeau, Foles' shoulder injury

The helicopters that flew over Lambeau Field after a Green Bay Packers touchdown during Thursday night's preseason game caught everyone by surprise, including local police.

Federer wears down Wawrinka to maintain mastery over compatriot

Roger Federer continued his mastery over Stan Wawrinka, but not before getting a fright en route to a 6-7(2) 7-6(6) 6-2 quarter-final victory at the Cincinnati Masters on Friday. Federer upped his career record against his Swiss compatriot to 21-3.

A day in the life of Roger Federer:Beat Leonardo Mayer in the morning.Beat Stan Wawrinka in the evening. The 37-year-old has just won TWO matches in the same day.🐐 pic.twitter.com/95DjU4pWJE

— bet365_aus (@bet365_aus) August 18, 2018

NFL notebook: Helicopters over Lambeau were a complete surprise

The helicopters that flew over Lambeau Field after a Green Bay Packers touchdown during Thursday night's preseason game caught everyone by surprise, including local police. "That had us scrambling last night," Paul Ebel, a Green Bay Police commander in charge of operations on game days at Lambeau, told the Green Bay Press-Gazette on Friday.

Helicopters over Lambeau left cops 'scrambling' https://t.co/42czxAmXoM

— Dwayne Dixon (@HITMANDDub) August 18, 2018

NFL roundup: Allen outduels Mayfield, stakes claim to Bills quarterback job

Baker Mayfield had another solid outing on Friday night, but it was fellow rookie quarterback Josh Allen who stole the show as the Buffalo Bills beat the host Cleveland Browns 19-17 in a Week 2 preseason game at FirstEnergy Stadium. Allen, the No. 7 overall pick out of Wyoming, was 9-of-13 for 60 yards with a scoring pass and added 18 yards on three carries. Perhaps more impressive was the impact he had on the entire offense. After starter AJ McCarron led the Bills to four consecutive three-and-outs to open the game, Allen took over and led Buffalo to points on all three of his drives -- two field goals and a 2-yard touchdown pass to Rod Streater.

MLB roundup: A's pull closer to Astros with a walk-off win

Matt Olson homered off left-hander Tony Sipp leading off the bottom of the 10th inning Friday night, completing a comeback that delivered the Oakland Athletics a 4-3 win over the Houston Astros in the opener of a three-game series between the top two teams in the American League West in Oakland, Calif. Nick Martini lashed a game-tying RBI double in the ninth to force extra innings for the A's (73-49), who moved within one game of the first-place Astros (74-48).

Biles dominant at U.S. gymnastics championships

Olympic champion Simone Biles compiled the highest score in the world this year when she piled up 60.100 points on the first night of the U.S. women's gymnastics championship in Boston on Friday. Less than a month into her return to competition after an almost two-year break, Biles looked like she had never been away.

Report: Tests show Foles' shoulder injury is minor

Philadelphia quarterback Nick Foles a shoulder injury suffered Thursday is minor and won't require a prolonged recovery, according to NFL.com's Ian Rapoport. Foles was diagnosed with a strained right shoulder in the Eagles' 37-20 preseason loss at the New England Patriots.

Report: Bills quarterback McCarron suffers the fractured collarbone

The Josh Allen era might begin a little earlier than originally planned in Buffalo. Bills starting quarterback AJ McCarron reportedly suffered a hairline fracture in his right collarbone during his team's 19-17 preseason victory at Cleveland on Friday.

Chiefs CB Nelson suffered concussion vs. Falcons

Kansas City Chiefs cornerback Steven Nelson is being treated for a concussion after taking a knee to the head vs. the Atlanta Falcons on Friday. On a first-quarter play at the goal line, Nelson was injured when Falcons tight end Austin Hooper tried to hurdle the cornerback and inadvertently kneed him in the head.

Boxing: Medics call for mandatory suspensions and scans to protect knocked out fighters

Ringside doctors in combat sports such as boxing and mixed martial arts (MMA) have called for suspensions and examinations for fighters who get knocked out to ensure they have enough time to recover before they fight again. Many state athletic commissions in the United States already impose suspensions of 30, 60 or 90 days but Dr. John Neidecker of the Association of Ringside Physicians (ARP) told Reuters that more needs to be done to protect fighters.

MLB notebook: Bauer could miss up to six weeks

Cleveland Indians right-hander Trevor Bauer will miss four to six weeks due to the stress fracture in his right leg, manager Terry Francona told reporters prior to Friday's game against the Baltimore Orioles. Bauer was hit in the leg last Saturday by a liner off the bat of Chicago White Sox first baseman Jose Abreu. An MRI exam on Tuesday revealed the fracture, and he was placed on the disabled list.

(With inputs from Reuters)